Home / 18,815.67-28,223.64-5,668.11

Finding the Fourth Proportional to 18,815.67, 28,223.64 and 5,668.11

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Solution

The fourth proportional to 18,815.67, 28,223.64 and 5,668.11 is: 8,502.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.67 : 28,223.64 = 5,668.11 : x
  2. Step 2: Convert to fraction form
    18,815.67/28,223.64 = 5,668.11/x
  3. Step 3: Cross multiply
    18,815.67x = 28,223.64 × 5,668.11
  4. Step 4: Simplify right side
    18,815.67x = 159,974,696.12
  5. Step 5: Solve for x
    x = 159,974,696.12/18,815.67
  6. Step 6: Final answer
    x = 8,502.21

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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.