Home / 10,531.56-15,764.46-7,761.36

Finding the Fourth Proportional to 10,531.56, 15,764.46 and 7,761.36

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Solution

The fourth proportional to 10,531.56, 15,764.46 and 7,761.36 is: 11,617.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,531.56 : 15,764.46 = 7,761.36 : x
  2. Step 2: Convert to fraction form
    10,531.56/15,764.46 = 7,761.36/x
  3. Step 3: Cross multiply
    10,531.56x = 15,764.46 × 7,761.36
  4. Step 4: Simplify right side
    10,531.56x = 122,353,649.27
  5. Step 5: Solve for x
    x = 122,353,649.27/10,531.56
  6. Step 6: Final answer
    x = 11,617.81

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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.