Home / 39,430.92-59,147.28-13,137.78

Finding the Fourth Proportional to 39,430.92, 59,147.28 and 13,137.78

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Solution

The fourth proportional to 39,430.92, 59,147.28 and 13,137.78 is: 19,706.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,430.92 : 59,147.28 = 13,137.78 : x
  2. Step 2: Convert to fraction form
    39,430.92/59,147.28 = 13,137.78/x
  3. Step 3: Cross multiply
    39,430.92x = 59,147.28 × 13,137.78
  4. Step 4: Simplify right side
    39,430.92x = 777,063,952.24
  5. Step 5: Solve for x
    x = 777,063,952.24/39,430.92
  6. Step 6: Final answer
    x = 19,706.97

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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.