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Finding the Fourth Proportional to 18,000.10, 27,000.15 and 17,319.70

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Solution

The fourth proportional to 18,000.10, 27,000.15 and 17,319.70 is: 25,979.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,000.10 : 27,000.15 = 17,319.70 : x
  2. Step 2: Convert to fraction form
    18,000.10/27,000.15 = 17,319.70/x
  3. Step 3: Cross multiply
    18,000.10x = 27,000.15 × 17,319.70
  4. Step 4: Simplify right side
    18,000.10x = 467,634,497.96
  5. Step 5: Solve for x
    x = 467,634,497.96/18,000.10
  6. Step 6: Final answer
    x = 25,979.55

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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.