Home / 12,386,841.40-18,580,262.10-7,851,878.20

Finding the Fourth Proportional to 12,386,841.40, 18,580,262.10 and 7,851,878.20

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Solution

The fourth proportional to 12,386,841.40, 18,580,262.10 and 7,851,878.20 is: 11,777,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,386,841.40 : 18,580,262.10 = 7,851,878.20 : x
  2. Step 2: Convert to fraction form
    12,386,841.40/18,580,262.10 = 7,851,878.20/x
  3. Step 3: Cross multiply
    12,386,841.40x = 18,580,262.10 × 7,851,878.20
  4. Step 4: Simplify right side
    12,386,841.40x = 145,889,954,933,276.25
  5. Step 5: Solve for x
    x = 145,889,954,933,276.25/12,386,841.40
  6. Step 6: Final answer
    x = 11,777,817.30

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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.