Home / 18,517.88-25,576.53-12,539.18

Finding the Fourth Proportional to 18,517.88, 25,576.53 and 12,539.18

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Solution

The fourth proportional to 18,517.88, 25,576.53 and 12,539.18 is: 17,318.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517.88 : 25,576.53 = 12,539.18 : x
  2. Step 2: Convert to fraction form
    18,517.88/25,576.53 = 12,539.18/x
  3. Step 3: Cross multiply
    18,517.88x = 25,576.53 × 12,539.18
  4. Step 4: Simplify right side
    18,517.88x = 320,708,713.45
  5. Step 5: Solve for x
    x = 320,708,713.45/18,517.88
  6. Step 6: Final answer
    x = 17,318.87

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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.