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Finding the Fourth Proportional to 39,614.88, 59,387.76 and 19,865.76

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Solution

The fourth proportional to 39,614.88, 59,387.76 and 19,865.76 is: 29,781.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,614.88 : 59,387.76 = 19,865.76 : x
  2. Step 2: Convert to fraction form
    39,614.88/59,387.76 = 19,865.76/x
  3. Step 3: Cross multiply
    39,614.88x = 59,387.76 × 19,865.76
  4. Step 4: Simplify right side
    39,614.88x = 1,179,782,987.10
  5. Step 5: Solve for x
    x = 1,179,782,987.10/39,614.88
  6. Step 6: Final answer
    x = 29,781.31

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1.5x scale

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.