Home / 20,932.92-31,399.38-9,243.81

Finding the Fourth Proportional to 20,932.92, 31,399.38 and 9,243.81

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Solution

The fourth proportional to 20,932.92, 31,399.38 and 9,243.81 is: 13,865.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.92 : 31,399.38 = 9,243.81 : x
  2. Step 2: Convert to fraction form
    20,932.92/31,399.38 = 9,243.81/x
  3. Step 3: Cross multiply
    20,932.92x = 31,399.38 × 9,243.81
  4. Step 4: Simplify right side
    20,932.92x = 290,249,902.84
  5. Step 5: Solve for x
    x = 290,249,902.84/20,932.92
  6. Step 6: Final answer
    x = 13,865.72

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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.