Home / 31,981.20-44,139.24-19,414.80

Finding the Fourth Proportional to 31,981.20, 44,139.24 and 19,414.80

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Solution

The fourth proportional to 31,981.20, 44,139.24 and 19,414.80 is: 26,795.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,981.20 : 44,139.24 = 19,414.80 : x
  2. Step 2: Convert to fraction form
    31,981.20/44,139.24 = 19,414.80/x
  3. Step 3: Cross multiply
    31,981.20x = 44,139.24 × 19,414.80
  4. Step 4: Simplify right side
    31,981.20x = 856,954,516.75
  5. Step 5: Solve for x
    x = 856,954,516.75/31,981.20
  6. Step 6: Final answer
    x = 26,795.57

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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.