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Finding the Fourth Proportional to 39,354.57, 54,308.97 and 21,449.57

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Solution

The fourth proportional to 39,354.57, 54,308.97 and 21,449.57 is: 29,600.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,354.57 : 54,308.97 = 21,449.57 : x
  2. Step 2: Convert to fraction form
    39,354.57/54,308.97 = 21,449.57/x
  3. Step 3: Cross multiply
    39,354.57x = 54,308.97 × 21,449.57
  4. Step 4: Simplify right side
    39,354.57x = 1,164,904,053.64
  5. Step 5: Solve for x
    x = 1,164,904,053.64/39,354.57
  6. Step 6: Final answer
    x = 29,600.22

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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.