Home / 25,520.45-35,220.19-15,311.87

Finding the Fourth Proportional to 25,520.45, 35,220.19 and 15,311.87

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Solution

The fourth proportional to 25,520.45, 35,220.19 and 15,311.87 is: 21,131.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,520.45 : 35,220.19 = 15,311.87 : x
  2. Step 2: Convert to fraction form
    25,520.45/35,220.19 = 15,311.87/x
  3. Step 3: Cross multiply
    25,520.45x = 35,220.19 × 15,311.87
  4. Step 4: Simplify right side
    25,520.45x = 539,286,794.55
  5. Step 5: Solve for x
    x = 539,286,794.55/25,520.45
  6. Step 6: Final answer
    x = 21,131.56

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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.