Home / 10,647,127.60-15,970,691.40-7,245,905.20

Finding the Fourth Proportional to 10,647,127.60, 15,970,691.40 and 7,245,905.20

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Solution

The fourth proportional to 10,647,127.60, 15,970,691.40 and 7,245,905.20 is: 10,868,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,647,127.60 : 15,970,691.40 = 7,245,905.20 : x
  2. Step 2: Convert to fraction form
    10,647,127.60/15,970,691.40 = 7,245,905.20/x
  3. Step 3: Cross multiply
    10,647,127.60x = 15,970,691.40 × 7,245,905.20
  4. Step 4: Simplify right side
    10,647,127.60x = 115,722,115,862,855.28
  5. Step 5: Solve for x
    x = 115,722,115,862,855.28/10,647,127.60
  6. Step 6: Final answer
    x = 10,868,857.80

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Double scale
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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.