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Finding the Fourth Proportional to 18,624.38, 27,931.10 and 5,473.62

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Solution

The fourth proportional to 18,624.38, 27,931.10 and 5,473.62 is: 8,208.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,624.38 : 27,931.10 = 5,473.62 : x
  2. Step 2: Convert to fraction form
    18,624.38/27,931.10 = 5,473.62/x
  3. Step 3: Cross multiply
    18,624.38x = 27,931.10 × 5,473.62
  4. Step 4: Simplify right side
    18,624.38x = 152,884,200.21
  5. Step 5: Solve for x
    x = 152,884,200.21/18,624.38
  6. Step 6: Final answer
    x = 8,208.82

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.