Home / 20,862.92-31,287.90-7,534.19

Finding the Fourth Proportional to 20,862.92, 31,287.90 and 7,534.19

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Solution

The fourth proportional to 20,862.92, 31,287.90 and 7,534.19 is: 11,298.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.92 : 31,287.90 = 7,534.19 : x
  2. Step 2: Convert to fraction form
    20,862.92/31,287.90 = 7,534.19/x
  3. Step 3: Cross multiply
    20,862.92x = 31,287.90 × 7,534.19
  4. Step 4: Simplify right side
    20,862.92x = 235,728,938.21
  5. Step 5: Solve for x
    x = 235,728,938.21/20,862.92
  6. Step 6: Final answer
    x = 11,298.94

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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.