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Finding the Fourth Proportional to 39,854.74, 59,790 and 11,391.96

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Solution

The fourth proportional to 39,854.74, 59,790 and 11,391.96 is: 17,090.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,854.74 : 59,790 = 11,391.96 : x
  2. Step 2: Convert to fraction form
    39,854.74/59,790 = 11,391.96/x
  3. Step 3: Cross multiply
    39,854.74x = 59,790 × 11,391.96
  4. Step 4: Simplify right side
    39,854.74x = 681,125,288.40
  5. Step 5: Solve for x
    x = 681,125,288.40/39,854.74
  6. Step 6: Final answer
    x = 17,090.20

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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.