Home / 18,668.12-28,002.17-5,519.46

Finding the Fourth Proportional to 18,668.12, 28,002.17 and 5,519.46

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Solution

The fourth proportional to 18,668.12, 28,002.17 and 5,519.46 is: 8,279.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.12 : 28,002.17 = 5,519.46 : x
  2. Step 2: Convert to fraction form
    18,668.12/28,002.17 = 5,519.46/x
  3. Step 3: Cross multiply
    18,668.12x = 28,002.17 × 5,519.46
  4. Step 4: Simplify right side
    18,668.12x = 154,556,976.03
  5. Step 5: Solve for x
    x = 154,556,976.03/18,668.12
  6. Step 6: Final answer
    x = 8,279.20

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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.