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Finding the Fourth Proportional to 15,008.92, 20,713.28 and 8,294.56

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Solution

The fourth proportional to 15,008.92, 20,713.28 and 8,294.56 is: 11,447.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,008.92 : 20,713.28 = 8,294.56 : x
  2. Step 2: Convert to fraction form
    15,008.92/20,713.28 = 8,294.56/x
  3. Step 3: Cross multiply
    15,008.92x = 20,713.28 × 8,294.56
  4. Step 4: Simplify right side
    15,008.92x = 171,807,543.76
  5. Step 5: Solve for x
    x = 171,807,543.76/15,008.92
  6. Step 6: Final answer
    x = 11,447.03

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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.