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Finding the Fourth Proportional to 15,059.52, 20,787.84 and 8,773.92

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Solution

The fourth proportional to 15,059.52, 20,787.84 and 8,773.92 is: 12,111.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.52 : 20,787.84 = 8,773.92 : x
  2. Step 2: Convert to fraction form
    15,059.52/20,787.84 = 8,773.92/x
  3. Step 3: Cross multiply
    15,059.52x = 20,787.84 × 8,773.92
  4. Step 4: Simplify right side
    15,059.52x = 182,390,845.13
  5. Step 5: Solve for x
    x = 182,390,845.13/15,059.52
  6. Step 6: Final answer
    x = 12,111.33

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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.