Home / 11,137.10-15,369.19-6,660.85

Finding the Fourth Proportional to 11,137.10, 15,369.19 and 6,660.85

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Solution

The fourth proportional to 11,137.10, 15,369.19 and 6,660.85 is: 9,191.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,137.10 : 15,369.19 = 6,660.85 : x
  2. Step 2: Convert to fraction form
    11,137.10/15,369.19 = 6,660.85/x
  3. Step 3: Cross multiply
    11,137.10x = 15,369.19 × 6,660.85
  4. Step 4: Simplify right side
    11,137.10x = 102,371,839.11
  5. Step 5: Solve for x
    x = 102,371,839.11/11,137.10
  6. Step 6: Final answer
    x = 9,191.97

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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.