Home / 18,815.68-28,223.70-5,668.12

Finding the Fourth Proportional to 18,815.68, 28,223.70 and 5,668.12

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Solution

The fourth proportional to 18,815.68, 28,223.70 and 5,668.12 is: 8,502.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.68 : 28,223.70 = 5,668.12 : x
  2. Step 2: Convert to fraction form
    18,815.68/28,223.70 = 5,668.12/x
  3. Step 3: Cross multiply
    18,815.68x = 28,223.70 × 5,668.12
  4. Step 4: Simplify right side
    18,815.68x = 159,975,318.44
  5. Step 5: Solve for x
    x = 159,975,318.44/18,815.68
  6. Step 6: Final answer
    x = 8,502.23

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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.