Home / 12,500.19-17,240.65-8,722.15

Finding the Fourth Proportional to 12,500.19, 17,240.65 and 8,722.15

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Solution

The fourth proportional to 12,500.19, 17,240.65 and 8,722.15 is: 12,029.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,500.19 : 17,240.65 = 8,722.15 : x
  2. Step 2: Convert to fraction form
    12,500.19/17,240.65 = 8,722.15/x
  3. Step 3: Cross multiply
    12,500.19x = 17,240.65 × 8,722.15
  4. Step 4: Simplify right side
    12,500.19x = 150,375,470.49
  5. Step 5: Solve for x
    x = 150,375,470.49/12,500.19
  6. Step 6: Final answer
    x = 12,029.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.