Home / 20,679.48-31,019.22-7,531.92

Finding the Fourth Proportional to 20,679.48, 31,019.22 and 7,531.92

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Solution

The fourth proportional to 20,679.48, 31,019.22 and 7,531.92 is: 11,297.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.48 : 31,019.22 = 7,531.92 : x
  2. Step 2: Convert to fraction form
    20,679.48/31,019.22 = 7,531.92/x
  3. Step 3: Cross multiply
    20,679.48x = 31,019.22 × 7,531.92
  4. Step 4: Simplify right side
    20,679.48x = 233,634,283.50
  5. Step 5: Solve for x
    x = 233,634,283.50/20,679.48
  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.