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Finding the Fourth Proportional to 18,000.14, 27,004.46 and 8,139.40

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Solution

The fourth proportional to 18,000.14, 27,004.46 and 8,139.40 is: 12,211.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,000.14 : 27,004.46 = 8,139.40 : x
  2. Step 2: Convert to fraction form
    18,000.14/27,004.46 = 8,139.40/x
  3. Step 3: Cross multiply
    18,000.14x = 27,004.46 × 8,139.40
  4. Step 4: Simplify right side
    18,000.14x = 219,799,993.52
  5. Step 5: Solve for x
    x = 219,799,993.52/18,000.14
  6. Step 6: Final answer
    x = 12,211.02

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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.