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Finding the Fourth Proportional to 12,539.52, 18,809.28 and 5,604.48

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Solution

The fourth proportional to 12,539.52, 18,809.28 and 5,604.48 is: 8,406.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.52 : 18,809.28 = 5,604.48 : x
  2. Step 2: Convert to fraction form
    12,539.52/18,809.28 = 5,604.48/x
  3. Step 3: Cross multiply
    12,539.52x = 18,809.28 × 5,604.48
  4. Step 4: Simplify right side
    12,539.52x = 105,416,233.57
  5. Step 5: Solve for x
    x = 105,416,233.57/12,539.52
  6. Step 6: Final answer
    x = 8,406.72

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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.