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Finding the Fourth Proportional to 39,304.92, 54,241.92 and 21,400.24

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Solution

The fourth proportional to 39,304.92, 54,241.92 and 21,400.24 is: 29,532.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,304.92 : 54,241.92 = 21,400.24 : x
  2. Step 2: Convert to fraction form
    39,304.92/54,241.92 = 21,400.24/x
  3. Step 3: Cross multiply
    39,304.92x = 54,241.92 × 21,400.24
  4. Step 4: Simplify right side
    39,304.92x = 1,160,790,106.06
  5. Step 5: Solve for x
    x = 1,160,790,106.06/39,304.92
  6. Step 6: Final answer
    x = 29,532.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.