Home / 42,155.40-63,237.36-13,691.16

Finding the Fourth Proportional to 42,155.40, 63,237.36 and 13,691.16

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Solution

The fourth proportional to 42,155.40, 63,237.36 and 13,691.16 is: 20,538.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,155.40 : 63,237.36 = 13,691.16 : x
  2. Step 2: Convert to fraction form
    42,155.40/63,237.36 = 13,691.16/x
  3. Step 3: Cross multiply
    42,155.40x = 63,237.36 × 13,691.16
  4. Step 4: Simplify right side
    42,155.40x = 865,792,813.74
  5. Step 5: Solve for x
    x = 865,792,813.74/42,155.40
  6. Step 6: Final answer
    x = 20,538.12

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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.