Home / 20,882.28-31,325.24-5,299.90

Finding the Fourth Proportional to 20,882.28, 31,325.24 and 5,299.90

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Solution

The fourth proportional to 20,882.28, 31,325.24 and 5,299.90 is: 7,950.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.28 : 31,325.24 = 5,299.90 : x
  2. Step 2: Convert to fraction form
    20,882.28/31,325.24 = 5,299.90/x
  3. Step 3: Cross multiply
    20,882.28x = 31,325.24 × 5,299.90
  4. Step 4: Simplify right side
    20,882.28x = 166,020,639.48
  5. Step 5: Solve for x
    x = 166,020,639.48/20,882.28
  6. Step 6: Final answer
    x = 7,950.31

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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.