Home / 12,338.10-18,521.55-12,251.70

Finding the Fourth Proportional to 12,338.10, 18,521.55 and 12,251.70

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Solution

The fourth proportional to 12,338.10, 18,521.55 and 12,251.70 is: 18,391.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.10 : 18,521.55 = 12,251.70 : x
  2. Step 2: Convert to fraction form
    12,338.10/18,521.55 = 12,251.70/x
  3. Step 3: Cross multiply
    12,338.10x = 18,521.55 × 12,251.70
  4. Step 4: Simplify right side
    12,338.10x = 226,920,474.14
  5. Step 5: Solve for x
    x = 226,920,474.14/12,338.10
  6. Step 6: Final answer
    x = 18,391.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.