Home / 20,964.08-31,446.15-5,381.71

Finding the Fourth Proportional to 20,964.08, 31,446.15 and 5,381.71

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Solution

The fourth proportional to 20,964.08, 31,446.15 and 5,381.71 is: 8,072.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.08 : 31,446.15 = 5,381.71 : x
  2. Step 2: Convert to fraction form
    20,964.08/31,446.15 = 5,381.71/x
  3. Step 3: Cross multiply
    20,964.08x = 31,446.15 × 5,381.71
  4. Step 4: Simplify right side
    20,964.08x = 169,233,875.78
  5. Step 5: Solve for x
    x = 169,233,875.78/20,964.08
  6. Step 6: Final answer
    x = 8,072.56

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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.