Home / 20,948.44-31,380.22-9,687.78

Finding the Fourth Proportional to 20,948.44, 31,380.22 and 9,687.78

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Solution

The fourth proportional to 20,948.44, 31,380.22 and 9,687.78 is: 14,512.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.44 : 31,380.22 = 9,687.78 : x
  2. Step 2: Convert to fraction form
    20,948.44/31,380.22 = 9,687.78/x
  3. Step 3: Cross multiply
    20,948.44x = 31,380.22 × 9,687.78
  4. Step 4: Simplify right side
    20,948.44x = 304,004,667.71
  5. Step 5: Solve for x
    x = 304,004,667.71/20,948.44
  6. Step 6: Final answer
    x = 14,512.04

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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.