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Finding the Fourth Proportional to 18,059.84, 27,089.28 and 8,191.92

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Solution

The fourth proportional to 18,059.84, 27,089.28 and 8,191.92 is: 12,287.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,059.84 : 27,089.28 = 8,191.92 : x
  2. Step 2: Convert to fraction form
    18,059.84/27,089.28 = 8,191.92/x
  3. Step 3: Cross multiply
    18,059.84x = 27,089.28 × 8,191.92
  4. Step 4: Simplify right side
    18,059.84x = 221,913,214.62
  5. Step 5: Solve for x
    x = 221,913,214.62/18,059.84
  6. Step 6: Final answer
    x = 12,287.66

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Double scale
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Similar ratio
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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.