Home / 11,177.11-15,431.18-7,403.49

Finding the Fourth Proportional to 11,177.11, 15,431.18 and 7,403.49

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Solution

The fourth proportional to 11,177.11, 15,431.18 and 7,403.49 is: 10,221.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,177.11 : 15,431.18 = 7,403.49 : x
  2. Step 2: Convert to fraction form
    11,177.11/15,431.18 = 7,403.49/x
  3. Step 3: Cross multiply
    11,177.11x = 15,431.18 × 7,403.49
  4. Step 4: Simplify right side
    11,177.11x = 114,244,549.80
  5. Step 5: Solve for x
    x = 114,244,549.80/11,177.11
  6. Step 6: Final answer
    x = 10,221.29

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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.