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Finding the Fourth Proportional to 15,757.28, 21,743.07 and 9,042.02

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Solution

The fourth proportional to 15,757.28, 21,743.07 and 9,042.02 is: 12,476.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,757.28 : 21,743.07 = 9,042.02 : x
  2. Step 2: Convert to fraction form
    15,757.28/21,743.07 = 9,042.02/x
  3. Step 3: Cross multiply
    15,757.28x = 21,743.07 × 9,042.02
  4. Step 4: Simplify right side
    15,757.28x = 196,601,273.80
  5. Step 5: Solve for x
    x = 196,601,273.80/15,757.28
  6. Step 6: Final answer
    x = 12,476.85

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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.