Home / 10,195.20-15,211.20-9,086.40

Finding the Fourth Proportional to 10,195.20, 15,211.20 and 9,086.40

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Solution

The fourth proportional to 10,195.20, 15,211.20 and 9,086.40 is: 13,556.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,195.20 : 15,211.20 = 9,086.40 : x
  2. Step 2: Convert to fraction form
    10,195.20/15,211.20 = 9,086.40/x
  3. Step 3: Cross multiply
    10,195.20x = 15,211.20 × 9,086.40
  4. Step 4: Simplify right side
    10,195.20x = 138,215,047.68
  5. Step 5: Solve for x
    x = 138,215,047.68/10,195.20
  6. Step 6: Final answer
    x = 13,556.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.