Home / 12,116,012,425.20-18,174,018,637.80-7,980,125,986.80

Finding the Fourth Proportional to 12,116,012,425.20, 18,174,018,637.80 and 7,980,125,986.80

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Solution

The fourth proportional to 12,116,012,425.20, 18,174,018,637.80 and 7,980,125,986.80 is: 11,970,188,980.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116,012,425.20 : 18,174,018,637.80 = 7,980,125,986.80 : x
  2. Step 2: Convert to fraction form
    12,116,012,425.20/18,174,018,637.80 = 7,980,125,986.80/x
  3. Step 3: Cross multiply
    12,116,012,425.20x = 18,174,018,637.80 × 7,980,125,986.80
  4. Step 4: Simplify right side
    12,116,012,425.20x = 145,030,958,416,095,313,920
  5. Step 5: Solve for x
    x = 145,030,958,416,095,313,920/12,116,012,425.20
  6. Step 6: Final answer
    x = 11,970,188,980.20

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Double scale
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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.