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Finding the Fourth Proportional to 18,691.95, 28,038.03 and 5,544.42

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Solution

The fourth proportional to 18,691.95, 28,038.03 and 5,544.42 is: 8,316.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.95 : 28,038.03 = 5,544.42 : x
  2. Step 2: Convert to fraction form
    18,691.95/28,038.03 = 5,544.42/x
  3. Step 3: Cross multiply
    18,691.95x = 28,038.03 × 5,544.42
  4. Step 4: Simplify right side
    18,691.95x = 155,454,614.29
  5. Step 5: Solve for x
    x = 155,454,614.29/18,691.95
  6. Step 6: Final answer
    x = 8,316.66

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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.