Home / 10,115.42-15,168.26-5,731.70

Finding the Fourth Proportional to 10,115.42, 15,168.26 and 5,731.70

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Solution

The fourth proportional to 10,115.42, 15,168.26 and 5,731.70 is: 8,594.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.42 : 15,168.26 = 5,731.70 : x
  2. Step 2: Convert to fraction form
    10,115.42/15,168.26 = 5,731.70/x
  3. Step 3: Cross multiply
    10,115.42x = 15,168.26 × 5,731.70
  4. Step 4: Simplify right side
    10,115.42x = 86,939,854.33
  5. Step 5: Solve for x
    x = 86,939,854.33/10,115.42
  6. Step 6: Final answer
    x = 8,594.79

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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.