Home / 12,131,657,997.40-18,197,486,996.10-9,927,665,882.20

Finding the Fourth Proportional to 12,131,657,997.40, 18,197,486,996.10 and 9,927,665,882.20

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Solution

The fourth proportional to 12,131,657,997.40, 18,197,486,996.10 and 9,927,665,882.20 is: 14,891,498,823.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131,657,997.40 : 18,197,486,996.10 = 9,927,665,882.20 : x
  2. Step 2: Convert to fraction form
    12,131,657,997.40/18,197,486,996.10 = 9,927,665,882.20/x
  3. Step 3: Cross multiply
    12,131,657,997.40x = 18,197,486,996.10 × 9,927,665,882.20
  4. Step 4: Simplify right side
    12,131,657,997.40x = 180,658,570,792,960,131,072
  5. Step 5: Solve for x
    x = 180,658,570,792,960,131,072/12,131,657,997.40
  6. Step 6: Final answer
    x = 14,891,498,823.30

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Double scale
Find fourth proportional to 12,131,657,998.40, 18,197,486,997.60 and 9,927,665,883.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.