Home / 20,715.24-31,063.28-6,672.66

Finding the Fourth Proportional to 20,715.24, 31,063.28 and 6,672.66

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Solution

The fourth proportional to 20,715.24, 31,063.28 and 6,672.66 is: 10,005.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.24 : 31,063.28 = 6,672.66 : x
  2. Step 2: Convert to fraction form
    20,715.24/31,063.28 = 6,672.66/x
  3. Step 3: Cross multiply
    20,715.24x = 31,063.28 × 6,672.66
  4. Step 4: Simplify right side
    20,715.24x = 207,274,705.92
  5. Step 5: Solve for x
    x = 207,274,705.92/20,715.24
  6. Step 6: Final answer
    x = 10,005.90

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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.