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Finding the Fourth Proportional to 28,342.17, 42,512.31 and 15,220.17

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Solution

The fourth proportional to 28,342.17, 42,512.31 and 15,220.17 is: 22,829.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,342.17 : 42,512.31 = 15,220.17 : x
  2. Step 2: Convert to fraction form
    28,342.17/42,512.31 = 15,220.17/x
  3. Step 3: Cross multiply
    28,342.17x = 42,512.31 × 15,220.17
  4. Step 4: Simplify right side
    28,342.17x = 647,044,585.29
  5. Step 5: Solve for x
    x = 647,044,585.29/28,342.17
  6. Step 6: Final answer
    x = 22,829.75

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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.