Home / 11,126.18-15,355.49-6,649.89

Finding the Fourth Proportional to 11,126.18, 15,355.49 and 6,649.89

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Solution

The fourth proportional to 11,126.18, 15,355.49 and 6,649.89 is: 9,177.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,126.18 : 15,355.49 = 6,649.89 : x
  2. Step 2: Convert to fraction form
    11,126.18/15,355.49 = 6,649.89/x
  3. Step 3: Cross multiply
    11,126.18x = 15,355.49 × 6,649.89
  4. Step 4: Simplify right side
    11,126.18x = 102,112,286.15
  5. Step 5: Solve for x
    x = 102,112,286.15/11,126.18
  6. Step 6: Final answer
    x = 9,177.66

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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.