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Finding the Fourth Proportional to 15,224.62, 21,008.54 and 8,935.78

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Solution

The fourth proportional to 15,224.62, 21,008.54 and 8,935.78 is: 12,330.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,224.62 : 21,008.54 = 8,935.78 : x
  2. Step 2: Convert to fraction form
    15,224.62/21,008.54 = 8,935.78/x
  3. Step 3: Cross multiply
    15,224.62x = 21,008.54 × 8,935.78
  4. Step 4: Simplify right side
    15,224.62x = 187,727,691.56
  5. Step 5: Solve for x
    x = 187,727,691.56/15,224.62
  6. Step 6: Final answer
    x = 12,330.53

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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.