Home / 39,209.61-54,108.60-21,304.92

Finding the Fourth Proportional to 39,209.61, 54,108.60 and 21,304.92

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Solution

The fourth proportional to 39,209.61, 54,108.60 and 21,304.92 is: 29,400.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,209.61 : 54,108.60 = 21,304.92 : x
  2. Step 2: Convert to fraction form
    39,209.61/54,108.60 = 21,304.92/x
  3. Step 3: Cross multiply
    39,209.61x = 54,108.60 × 21,304.92
  4. Step 4: Simplify right side
    39,209.61x = 1,152,779,394.31
  5. Step 5: Solve for x
    x = 1,152,779,394.31/39,209.61
  6. Step 6: Final answer
    x = 29,400.43

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Half scale
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Double scale
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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.