Home / 10,613.28-15,927.18-3,687.78

Finding the Fourth Proportional to 10,613.28, 15,927.18 and 3,687.78

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Solution

The fourth proportional to 10,613.28, 15,927.18 and 3,687.78 is: 5,534.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,613.28 : 15,927.18 = 3,687.78 : x
  2. Step 2: Convert to fraction form
    10,613.28/15,927.18 = 3,687.78/x
  3. Step 3: Cross multiply
    10,613.28x = 15,927.18 × 3,687.78
  4. Step 4: Simplify right side
    10,613.28x = 58,735,935.86
  5. Step 5: Solve for x
    x = 58,735,935.86/10,613.28
  6. Step 6: Final answer
    x = 5,534.19

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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.