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Finding the Fourth Proportional to 18,000.10, 27,000.15 and 15,148.90

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Solution

The fourth proportional to 18,000.10, 27,000.15 and 15,148.90 is: 22,723.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,000.10 : 27,000.15 = 15,148.90 : x
  2. Step 2: Convert to fraction form
    18,000.10/27,000.15 = 15,148.90/x
  3. Step 3: Cross multiply
    18,000.10x = 27,000.15 × 15,148.90
  4. Step 4: Simplify right side
    18,000.10x = 409,022,572.34
  5. Step 5: Solve for x
    x = 409,022,572.34/18,000.10
  6. Step 6: Final answer
    x = 22,723.35

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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.