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Finding the Fourth Proportional to 15,565.92, 21,481.02 and 8,492.49

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Solution

The fourth proportional to 15,565.92, 21,481.02 and 8,492.49 is: 11,719.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,565.92 : 21,481.02 = 8,492.49 : x
  2. Step 2: Convert to fraction form
    15,565.92/21,481.02 = 8,492.49/x
  3. Step 3: Cross multiply
    15,565.92x = 21,481.02 × 8,492.49
  4. Step 4: Simplify right side
    15,565.92x = 182,427,347.54
  5. Step 5: Solve for x
    x = 182,427,347.54/15,565.92
  6. Step 6: Final answer
    x = 11,719.66

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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.