Home / 13,441.38-20,147.13-10,143.78

Finding the Fourth Proportional to 13,441.38, 20,147.13 and 10,143.78

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Solution

The fourth proportional to 13,441.38, 20,147.13 and 10,143.78 is: 15,204.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,441.38 : 20,147.13 = 10,143.78 : x
  2. Step 2: Convert to fraction form
    13,441.38/20,147.13 = 10,143.78/x
  3. Step 3: Cross multiply
    13,441.38x = 20,147.13 × 10,143.78
  4. Step 4: Simplify right side
    13,441.38x = 204,368,054.35
  5. Step 5: Solve for x
    x = 204,368,054.35/13,441.38
  6. Step 6: Final answer
    x = 15,204.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.