Home / 21,174.14-31,760.66-5,591.90

Finding the Fourth Proportional to 21,174.14, 31,760.66 and 5,591.90

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Solution

The fourth proportional to 21,174.14, 31,760.66 and 5,591.90 is: 8,387.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.14 : 31,760.66 = 5,591.90 : x
  2. Step 2: Convert to fraction form
    21,174.14/31,760.66 = 5,591.90/x
  3. Step 3: Cross multiply
    21,174.14x = 31,760.66 × 5,591.90
  4. Step 4: Simplify right side
    21,174.14x = 177,602,434.65
  5. Step 5: Solve for x
    x = 177,602,434.65/21,174.14
  6. Step 6: Final answer
    x = 8,387.70

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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.