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Finding the Fourth Proportional to 18,294.32, 27,446.74 and 8,939.73

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Solution

The fourth proportional to 18,294.32, 27,446.74 and 8,939.73 is: 13,412.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,294.32 : 27,446.74 = 8,939.73 : x
  2. Step 2: Convert to fraction form
    18,294.32/27,446.74 = 8,939.73/x
  3. Step 3: Cross multiply
    18,294.32x = 27,446.74 × 8,939.73
  4. Step 4: Simplify right side
    18,294.32x = 245,366,330.10
  5. Step 5: Solve for x
    x = 245,366,330.10/18,294.32
  6. Step 6: Final answer
    x = 13,412.16

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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.