Home / 20,962.27-31,443.36-5,379.90

Finding the Fourth Proportional to 20,962.27, 31,443.36 and 5,379.90

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Solution

The fourth proportional to 20,962.27, 31,443.36 and 5,379.90 is: 8,069.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.27 : 31,443.36 = 5,379.90 : x
  2. Step 2: Convert to fraction form
    20,962.27/31,443.36 = 5,379.90/x
  3. Step 3: Cross multiply
    20,962.27x = 31,443.36 × 5,379.90
  4. Step 4: Simplify right side
    20,962.27x = 169,162,132.46
  5. Step 5: Solve for x
    x = 169,162,132.46/20,962.27
  6. Step 6: Final answer
    x = 8,069.84

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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.