Home / 10,189.38-14,040.26-8,191.92

Finding the Fourth Proportional to 10,189.38, 14,040.26 and 8,191.92

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Solution

The fourth proportional to 10,189.38, 14,040.26 and 8,191.92 is: 11,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,189.38 : 14,040.26 = 8,191.92 : x
  2. Step 2: Convert to fraction form
    10,189.38/14,040.26 = 8,191.92/x
  3. Step 3: Cross multiply
    10,189.38x = 14,040.26 × 8,191.92
  4. Step 4: Simplify right side
    10,189.38x = 115,016,686.70
  5. Step 5: Solve for x
    x = 115,016,686.70/10,189.38
  6. Step 6: Final answer
    x = 11,287.90

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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.