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Finding the Fourth Proportional to 18,309.90, 27,468.90 and 8,446.80

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Solution

The fourth proportional to 18,309.90, 27,468.90 and 8,446.80 is: 12,672.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309.90 : 27,468.90 = 8,446.80 : x
  2. Step 2: Convert to fraction form
    18,309.90/27,468.90 = 8,446.80/x
  3. Step 3: Cross multiply
    18,309.90x = 27,468.90 × 8,446.80
  4. Step 4: Simplify right side
    18,309.90x = 232,024,304.52
  5. Step 5: Solve for x
    x = 232,024,304.52/18,309.90
  6. Step 6: Final answer
    x = 12,672.07

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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.