Home / 18,538.20-25,576.20-12,871.44

Finding the Fourth Proportional to 18,538.20, 25,576.20 and 12,871.44

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Solution

The fourth proportional to 18,538.20, 25,576.20 and 12,871.44 is: 17,758.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,538.20 : 25,576.20 = 12,871.44 : x
  2. Step 2: Convert to fraction form
    18,538.20/25,576.20 = 12,871.44/x
  3. Step 3: Cross multiply
    18,538.20x = 25,576.20 × 12,871.44
  4. Step 4: Simplify right side
    18,538.20x = 329,202,523.73
  5. Step 5: Solve for x
    x = 329,202,523.73/18,538.20
  6. Step 6: Final answer
    x = 17,758.06

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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.