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Finding the Fourth Proportional to 18,402.06, 27,581.48 and 8,520.46

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Solution

The fourth proportional to 18,402.06, 27,581.48 and 8,520.46 is: 12,770.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,402.06 : 27,581.48 = 8,520.46 : x
  2. Step 2: Convert to fraction form
    18,402.06/27,581.48 = 8,520.46/x
  3. Step 3: Cross multiply
    18,402.06x = 27,581.48 × 8,520.46
  4. Step 4: Simplify right side
    18,402.06x = 235,006,897.08
  5. Step 5: Solve for x
    x = 235,006,897.08/18,402.06
  6. Step 6: Final answer
    x = 12,770.68

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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.