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Finding the Fourth Proportional to 18,065.52, 27,100.80 and 8,207.28

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Solution

The fourth proportional to 18,065.52, 27,100.80 and 8,207.28 is: 12,312.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,065.52 : 27,100.80 = 8,207.28 : x
  2. Step 2: Convert to fraction form
    18,065.52/27,100.80 = 8,207.28/x
  3. Step 3: Cross multiply
    18,065.52x = 27,100.80 × 8,207.28
  4. Step 4: Simplify right side
    18,065.52x = 222,423,853.82
  5. Step 5: Solve for x
    x = 222,423,853.82/18,065.52
  6. Step 6: Final answer
    x = 12,312.06

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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.