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Finding the Fourth Proportional to 18,279.95, 27,435.92 and 8,926.88

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Solution

The fourth proportional to 18,279.95, 27,435.92 and 8,926.88 is: 13,398.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.95 : 27,435.92 = 8,926.88 : x
  2. Step 2: Convert to fraction form
    18,279.95/27,435.92 = 8,926.88/x
  3. Step 3: Cross multiply
    18,279.95x = 27,435.92 × 8,926.88
  4. Step 4: Simplify right side
    18,279.95x = 244,916,983.72
  5. Step 5: Solve for x
    x = 244,916,983.72/18,279.95
  6. Step 6: Final answer
    x = 13,398.12

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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.