Home / 28,691.48-39,592.44-15,943.88

Finding the Fourth Proportional to 28,691.48, 39,592.44 and 15,943.88

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Solution

The fourth proportional to 28,691.48, 39,592.44 and 15,943.88 is: 22,001.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,691.48 : 39,592.44 = 15,943.88 : x
  2. Step 2: Convert to fraction form
    28,691.48/39,592.44 = 15,943.88/x
  3. Step 3: Cross multiply
    28,691.48x = 39,592.44 × 15,943.88
  4. Step 4: Simplify right side
    28,691.48x = 631,257,112.27
  5. Step 5: Solve for x
    x = 631,257,112.27/28,691.48
  6. Step 6: Final answer
    x = 22,001.55

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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.