Home / 20,679.44-31,019.15-7,531.92

Finding the Fourth Proportional to 20,679.44, 31,019.15 and 7,531.92

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Solution

The fourth proportional to 20,679.44, 31,019.15 and 7,531.92 is: 11,297.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.44 : 31,019.15 = 7,531.92 : x
  2. Step 2: Convert to fraction form
    20,679.44/31,019.15 = 7,531.92/x
  3. Step 3: Cross multiply
    20,679.44x = 31,019.15 × 7,531.92
  4. Step 4: Simplify right side
    20,679.44x = 233,633,775.10
  5. Step 5: Solve for x
    x = 233,633,775.10/20,679.44
  6. Step 6: Final answer
    x = 11,297.88

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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.