Home / 15,042.20-20,758.72-8,668.29

Finding the Fourth Proportional to 15,042.20, 20,758.72 and 8,668.29

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Solution

The fourth proportional to 15,042.20, 20,758.72 and 8,668.29 is: 11,962.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,042.20 : 20,758.72 = 8,668.29 : x
  2. Step 2: Convert to fraction form
    15,042.20/20,758.72 = 8,668.29/x
  3. Step 3: Cross multiply
    15,042.20x = 20,758.72 × 8,668.29
  4. Step 4: Simplify right side
    15,042.20x = 179,942,505.47
  5. Step 5: Solve for x
    x = 179,942,505.47/15,042.20
  6. Step 6: Final answer
    x = 11,962.51

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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.