Home / 20,873.36-31,296.17-11,517.86

Finding the Fourth Proportional to 20,873.36, 31,296.17 and 11,517.86

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Solution

The fourth proportional to 20,873.36, 31,296.17 and 11,517.86 is: 17,269.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.36 : 31,296.17 = 11,517.86 : x
  2. Step 2: Convert to fraction form
    20,873.36/31,296.17 = 11,517.86/x
  3. Step 3: Cross multiply
    20,873.36x = 31,296.17 × 11,517.86
  4. Step 4: Simplify right side
    20,873.36x = 360,465,011.63
  5. Step 5: Solve for x
    x = 360,465,011.63/20,873.36
  6. Step 6: Final answer
    x = 17,269.14

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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.