Home / 10,687.44-16,034.40-5,139.21

Finding the Fourth Proportional to 10,687.44, 16,034.40 and 5,139.21

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Solution

The fourth proportional to 10,687.44, 16,034.40 and 5,139.21 is: 7,710.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,687.44 : 16,034.40 = 5,139.21 : x
  2. Step 2: Convert to fraction form
    10,687.44/16,034.40 = 5,139.21/x
  3. Step 3: Cross multiply
    10,687.44x = 16,034.40 × 5,139.21
  4. Step 4: Simplify right side
    10,687.44x = 82,404,148.82
  5. Step 5: Solve for x
    x = 82,404,148.82/10,687.44
  6. Step 6: Final answer
    x = 7,710.37

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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.