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Finding the Fourth Proportional to 18,602.43, 27,901.20 and 8,211.75

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Solution

The fourth proportional to 18,602.43, 27,901.20 and 8,211.75 is: 12,316.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,602.43 : 27,901.20 = 8,211.75 : x
  2. Step 2: Convert to fraction form
    18,602.43/27,901.20 = 8,211.75/x
  3. Step 3: Cross multiply
    18,602.43x = 27,901.20 × 8,211.75
  4. Step 4: Simplify right side
    18,602.43x = 229,117,679.10
  5. Step 5: Solve for x
    x = 229,117,679.10/18,602.43
  6. Step 6: Final answer
    x = 12,316.55

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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.