Home / 11,140.92-15,379.20-7,365.78

Finding the Fourth Proportional to 11,140.92, 15,379.20 and 7,365.78

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Solution

The fourth proportional to 11,140.92, 15,379.20 and 7,365.78 is: 10,167.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,140.92 : 15,379.20 = 7,365.78 : x
  2. Step 2: Convert to fraction form
    11,140.92/15,379.20 = 7,365.78/x
  3. Step 3: Cross multiply
    11,140.92x = 15,379.20 × 7,365.78
  4. Step 4: Simplify right side
    11,140.92x = 113,279,803.78
  5. Step 5: Solve for x
    x = 113,279,803.78/11,140.92
  6. Step 6: Final answer
    x = 10,167.90

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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.