Home / 18,668.46-28,002.69-5,521.86

Finding the Fourth Proportional to 18,668.46, 28,002.69 and 5,521.86

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Solution

The fourth proportional to 18,668.46, 28,002.69 and 5,521.86 is: 8,282.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.46 : 28,002.69 = 5,521.86 : x
  2. Step 2: Convert to fraction form
    18,668.46/28,002.69 = 5,521.86/x
  3. Step 3: Cross multiply
    18,668.46x = 28,002.69 × 5,521.86
  4. Step 4: Simplify right side
    18,668.46x = 154,626,933.80
  5. Step 5: Solve for x
    x = 154,626,933.80/18,668.46
  6. Step 6: Final answer
    x = 8,282.79

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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.