Home / 10,131.87-15,197.65-5,198.66

Finding the Fourth Proportional to 10,131.87, 15,197.65 and 5,198.66

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Solution

The fourth proportional to 10,131.87, 15,197.65 and 5,198.66 is: 7,797.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,131.87 : 15,197.65 = 5,198.66 : x
  2. Step 2: Convert to fraction form
    10,131.87/15,197.65 = 5,198.66/x
  3. Step 3: Cross multiply
    10,131.87x = 15,197.65 × 5,198.66
  4. Step 4: Simplify right side
    10,131.87x = 79,007,440.15
  5. Step 5: Solve for x
    x = 79,007,440.15/10,131.87
  6. Step 6: Final answer
    x = 7,797.91

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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.