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Finding the Fourth Proportional to 13,613,710.40, 20,420,565.60 and 10,531,352.60

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Solution

The fourth proportional to 13,613,710.40, 20,420,565.60 and 10,531,352.60 is: 15,797,028.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613,710.40 : 20,420,565.60 = 10,531,352.60 : x
  2. Step 2: Convert to fraction form
    13,613,710.40/20,420,565.60 = 10,531,352.60/x
  3. Step 3: Cross multiply
    13,613,710.40x = 20,420,565.60 × 10,531,352.60
  4. Step 4: Simplify right side
    13,613,710.40x = 215,056,176,625,030.56
  5. Step 5: Solve for x
    x = 215,056,176,625,030.56/13,613,710.40
  6. Step 6: Final answer
    x = 15,797,028.90

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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.