Home / 18,668.37-28,007.28-5,520.72

Finding the Fourth Proportional to 18,668.37, 28,007.28 and 5,520.72

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Solution

The fourth proportional to 18,668.37, 28,007.28 and 5,520.72 is: 8,282.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.37 : 28,007.28 = 5,520.72 : x
  2. Step 2: Convert to fraction form
    18,668.37/28,007.28 = 5,520.72/x
  3. Step 3: Cross multiply
    18,668.37x = 28,007.28 × 5,520.72
  4. Step 4: Simplify right side
    18,668.37x = 154,620,350.84
  5. Step 5: Solve for x
    x = 154,620,350.84/18,668.37
  6. Step 6: Final answer
    x = 8,282.48

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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.