Home / 23,119.20-31,912.68-13,687.76

Finding the Fourth Proportional to 23,119.20, 31,912.68 and 13,687.76

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Solution

The fourth proportional to 23,119.20, 31,912.68 and 13,687.76 is: 18,893.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,119.20 : 31,912.68 = 13,687.76 : x
  2. Step 2: Convert to fraction form
    23,119.20/31,912.68 = 13,687.76/x
  3. Step 3: Cross multiply
    23,119.20x = 31,912.68 × 13,687.76
  4. Step 4: Simplify right side
    23,119.20x = 436,813,104.80
  5. Step 5: Solve for x
    x = 436,813,104.80/23,119.20
  6. Step 6: Final answer
    x = 18,893.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.