Home / 20,679.24-31,023.47-7,531.61

Finding the Fourth Proportional to 20,679.24, 31,023.47 and 7,531.61

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Solution

The fourth proportional to 20,679.24, 31,023.47 and 7,531.61 is: 11,299.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.24 : 31,023.47 = 7,531.61 : x
  2. Step 2: Convert to fraction form
    20,679.24/31,023.47 = 7,531.61/x
  3. Step 3: Cross multiply
    20,679.24x = 31,023.47 × 7,531.61
  4. Step 4: Simplify right side
    20,679.24x = 233,656,744.86
  5. Step 5: Solve for x
    x = 233,656,744.86/20,679.24
  6. Step 6: Final answer
    x = 11,299.10

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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.