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Finding the Fourth Proportional to 15,734.52, 21,713.97 and 8,660.97

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Solution

The fourth proportional to 15,734.52, 21,713.97 and 8,660.97 is: 11,952.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,734.52 : 21,713.97 = 8,660.97 : x
  2. Step 2: Convert to fraction form
    15,734.52/21,713.97 = 8,660.97/x
  3. Step 3: Cross multiply
    15,734.52x = 21,713.97 × 8,660.97
  4. Step 4: Simplify right side
    15,734.52x = 188,064,042.75
  5. Step 5: Solve for x
    x = 188,064,042.75/15,734.52
  6. Step 6: Final answer
    x = 11,952.32

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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.