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Finding the Fourth Proportional to 18,312.20, 27,484.10 and 8,959.13

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Solution

The fourth proportional to 18,312.20, 27,484.10 and 8,959.13 is: 13,446.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.20 : 27,484.10 = 8,959.13 : x
  2. Step 2: Convert to fraction form
    18,312.20/27,484.10 = 8,959.13/x
  3. Step 3: Cross multiply
    18,312.20x = 27,484.10 × 8,959.13
  4. Step 4: Simplify right side
    18,312.20x = 246,233,442.62
  5. Step 5: Solve for x
    x = 246,233,442.62/18,312.20
  6. Step 6: Final answer
    x = 13,446.42

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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.