Home / 11,815.88-16,306.11-7,631.42

Finding the Fourth Proportional to 11,815.88, 16,306.11 and 7,631.42

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Solution

The fourth proportional to 11,815.88, 16,306.11 and 7,631.42 is: 10,531.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.88 : 16,306.11 = 7,631.42 : x
  2. Step 2: Convert to fraction form
    11,815.88/16,306.11 = 7,631.42/x
  3. Step 3: Cross multiply
    11,815.88x = 16,306.11 × 7,631.42
  4. Step 4: Simplify right side
    11,815.88x = 124,438,692.45
  5. Step 5: Solve for x
    x = 124,438,692.45/11,815.88
  6. Step 6: Final answer
    x = 10,531.48

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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.