Home / 10,218.75-15,319.85-3,195.15

Finding the Fourth Proportional to 10,218.75, 15,319.85 and 3,195.15

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Solution

The fourth proportional to 10,218.75, 15,319.85 and 3,195.15 is: 4,790.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218.75 : 15,319.85 = 3,195.15 : x
  2. Step 2: Convert to fraction form
    10,218.75/15,319.85 = 3,195.15/x
  3. Step 3: Cross multiply
    10,218.75x = 15,319.85 × 3,195.15
  4. Step 4: Simplify right side
    10,218.75x = 48,949,142.13
  5. Step 5: Solve for x
    x = 48,949,142.13/10,218.75
  6. Step 6: Final answer
    x = 4,790.13

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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.