Home / 10,513,355.40-15,745,149.90-7,129,240.20

Finding the Fourth Proportional to 10,513,355.40, 15,745,149.90 and 7,129,240.20

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Solution

The fourth proportional to 10,513,355.40, 15,745,149.90 and 7,129,240.20 is: 10,676,986.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,513,355.40 : 15,745,149.90 = 7,129,240.20 : x
  2. Step 2: Convert to fraction form
    10,513,355.40/15,745,149.90 = 7,129,240.20/x
  3. Step 3: Cross multiply
    10,513,355.40x = 15,745,149.90 × 7,129,240.20
  4. Step 4: Simplify right side
    10,513,355.40x = 112,250,955,622,105.98
  5. Step 5: Solve for x
    x = 112,250,955,622,105.98/10,513,355.40
  6. Step 6: Final answer
    x = 10,676,986.69

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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.