Home / 20,882.20-31,323.30-5,299.24

Finding the Fourth Proportional to 20,882.20, 31,323.30 and 5,299.24

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Solution

The fourth proportional to 20,882.20, 31,323.30 and 5,299.24 is: 7,948.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.20 : 31,323.30 = 5,299.24 : x
  2. Step 2: Convert to fraction form
    20,882.20/31,323.30 = 5,299.24/x
  3. Step 3: Cross multiply
    20,882.20x = 31,323.30 × 5,299.24
  4. Step 4: Simplify right side
    20,882.20x = 165,989,684.29
  5. Step 5: Solve for x
    x = 165,989,684.29/20,882.20
  6. Step 6: Final answer
    x = 7,948.86

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1.5x scale

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.