Home / 12,141.27-18,218.97-5,120.85

Finding the Fourth Proportional to 12,141.27, 18,218.97 and 5,120.85

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Solution

The fourth proportional to 12,141.27, 18,218.97 and 5,120.85 is: 7,684.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,141.27 : 18,218.97 = 5,120.85 : x
  2. Step 2: Convert to fraction form
    12,141.27/18,218.97 = 5,120.85/x
  3. Step 3: Cross multiply
    12,141.27x = 18,218.97 × 5,120.85
  4. Step 4: Simplify right side
    12,141.27x = 93,296,612.52
  5. Step 5: Solve for x
    x = 93,296,612.52/12,141.27
  6. Step 6: Final answer
    x = 7,684.25

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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.