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Finding the Fourth Proportional to 12,432.52, 18,648.78 and 8,525.08

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Solution

The fourth proportional to 12,432.52, 18,648.78 and 8,525.08 is: 12,787.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,432.52 : 18,648.78 = 8,525.08 : x
  2. Step 2: Convert to fraction form
    12,432.52/18,648.78 = 8,525.08/x
  3. Step 3: Cross multiply
    12,432.52x = 18,648.78 × 8,525.08
  4. Step 4: Simplify right side
    12,432.52x = 158,982,341.40
  5. Step 5: Solve for x
    x = 158,982,341.40/12,432.52
  6. Step 6: Final answer
    x = 12,787.62

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.