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Finding the Fourth Proportional to 18,337.80, 27,506.70 and 12,432.90

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Solution

The fourth proportional to 18,337.80, 27,506.70 and 12,432.90 is: 18,649.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,337.80 : 27,506.70 = 12,432.90 : x
  2. Step 2: Convert to fraction form
    18,337.80/27,506.70 = 12,432.90/x
  3. Step 3: Cross multiply
    18,337.80x = 27,506.70 × 12,432.90
  4. Step 4: Simplify right side
    18,337.80x = 341,988,050.43
  5. Step 5: Solve for x
    x = 341,988,050.43/18,337.80
  6. Step 6: Final answer
    x = 18,649.35

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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.