Home / 20,239.32-30,356.10-9,158.52

Finding the Fourth Proportional to 20,239.32, 30,356.10 and 9,158.52

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Solution

The fourth proportional to 20,239.32, 30,356.10 and 9,158.52 is: 13,736.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.32 : 30,356.10 = 9,158.52 : x
  2. Step 2: Convert to fraction form
    20,239.32/30,356.10 = 9,158.52/x
  3. Step 3: Cross multiply
    20,239.32x = 30,356.10 × 9,158.52
  4. Step 4: Simplify right side
    20,239.32x = 278,016,948.97
  5. Step 5: Solve for x
    x = 278,016,948.97/20,239.32
  6. Step 6: Final answer
    x = 13,736.48

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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.