Home / 25,881.92-35,708.82-15,121.88

Finding the Fourth Proportional to 25,881.92, 35,708.82 and 15,121.88

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Solution

The fourth proportional to 25,881.92, 35,708.82 and 15,121.88 is: 20,863.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,881.92 : 35,708.82 = 15,121.88 : x
  2. Step 2: Convert to fraction form
    25,881.92/35,708.82 = 15,121.88/x
  3. Step 3: Cross multiply
    25,881.92x = 35,708.82 × 15,121.88
  4. Step 4: Simplify right side
    25,881.92x = 539,984,490.98
  5. Step 5: Solve for x
    x = 539,984,490.98/25,881.92
  6. Step 6: Final answer
    x = 20,863.39

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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.