Home / 13,443.38-20,150.12-10,145.78

Finding the Fourth Proportional to 13,443.38, 20,150.12 and 10,145.78

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Solution

The fourth proportional to 13,443.38, 20,150.12 and 10,145.78 is: 15,207.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,443.38 : 20,150.12 = 10,145.78 : x
  2. Step 2: Convert to fraction form
    13,443.38/20,150.12 = 10,145.78/x
  3. Step 3: Cross multiply
    13,443.38x = 20,150.12 × 10,145.78
  4. Step 4: Simplify right side
    13,443.38x = 204,438,684.49
  5. Step 5: Solve for x
    x = 204,438,684.49/13,443.38
  6. Step 6: Final answer
    x = 15,207.39

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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.