Home / 20,899.28-31,325.52-15,952.52

Finding the Fourth Proportional to 20,899.28, 31,325.52 and 15,952.52

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Solution

The fourth proportional to 20,899.28, 31,325.52 and 15,952.52 is: 23,910.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.28 : 31,325.52 = 15,952.52 : x
  2. Step 2: Convert to fraction form
    20,899.28/31,325.52 = 15,952.52/x
  3. Step 3: Cross multiply
    20,899.28x = 31,325.52 × 15,952.52
  4. Step 4: Simplify right side
    20,899.28x = 499,720,984.31
  5. Step 5: Solve for x
    x = 499,720,984.31/20,899.28
  6. Step 6: Final answer
    x = 23,910.92

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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.