Home / 13,818.55-20,731.01-3,957.91

Finding the Fourth Proportional to 13,818.55, 20,731.01 and 3,957.91

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Solution

The fourth proportional to 13,818.55, 20,731.01 and 3,957.91 is: 5,937.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.55 : 20,731.01 = 3,957.91 : x
  2. Step 2: Convert to fraction form
    13,818.55/20,731.01 = 3,957.91/x
  3. Step 3: Cross multiply
    13,818.55x = 20,731.01 × 3,957.91
  4. Step 4: Simplify right side
    13,818.55x = 82,051,471.79
  5. Step 5: Solve for x
    x = 82,051,471.79/13,818.55
  6. Step 6: Final answer
    x = 5,937.78

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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.