Home / 20,772.18-31,084.43-15,211.73

Finding the Fourth Proportional to 20,772.18, 31,084.43 and 15,211.73

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Solution

The fourth proportional to 20,772.18, 31,084.43 and 15,211.73 is: 22,763.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.18 : 31,084.43 = 15,211.73 : x
  2. Step 2: Convert to fraction form
    20,772.18/31,084.43 = 15,211.73/x
  3. Step 3: Cross multiply
    20,772.18x = 31,084.43 × 15,211.73
  4. Step 4: Simplify right side
    20,772.18x = 472,847,724.88
  5. Step 5: Solve for x
    x = 472,847,724.88/20,772.18
  6. Step 6: Final answer
    x = 22,763.51

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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.