Home / 13,617.44-20,425.92-7,761.56

Finding the Fourth Proportional to 13,617.44, 20,425.92 and 7,761.56

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Solution

The fourth proportional to 13,617.44, 20,425.92 and 7,761.56 is: 11,642.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.44 : 20,425.92 = 7,761.56 : x
  2. Step 2: Convert to fraction form
    13,617.44/20,425.92 = 7,761.56/x
  3. Step 3: Cross multiply
    13,617.44x = 20,425.92 × 7,761.56
  4. Step 4: Simplify right side
    13,617.44x = 158,537,003.64
  5. Step 5: Solve for x
    x = 158,537,003.64/13,617.44
  6. Step 6: Final answer
    x = 11,642.20

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1.5x scale

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.