Home / 10,123.40-15,185.24-3,549.78

Finding the Fourth Proportional to 10,123.40, 15,185.24 and 3,549.78

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Solution

The fourth proportional to 10,123.40, 15,185.24 and 3,549.78 is: 5,324.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,123.40 : 15,185.24 = 3,549.78 : x
  2. Step 2: Convert to fraction form
    10,123.40/15,185.24 = 3,549.78/x
  3. Step 3: Cross multiply
    10,123.40x = 15,185.24 × 3,549.78
  4. Step 4: Simplify right side
    10,123.40x = 53,904,256.81
  5. Step 5: Solve for x
    x = 53,904,256.81/10,123.40
  6. Step 6: Final answer
    x = 5,324.72

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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.