Home / 20,668.38-31,001.76-8,817.27

Finding the Fourth Proportional to 20,668.38, 31,001.76 and 8,817.27

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Solution

The fourth proportional to 20,668.38, 31,001.76 and 8,817.27 is: 13,225.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.38 : 31,001.76 = 8,817.27 : x
  2. Step 2: Convert to fraction form
    20,668.38/31,001.76 = 8,817.27/x
  3. Step 3: Cross multiply
    20,668.38x = 31,001.76 × 8,817.27
  4. Step 4: Simplify right side
    20,668.38x = 273,350,888.40
  5. Step 5: Solve for x
    x = 273,350,888.40/20,668.38
  6. Step 6: Final answer
    x = 13,225.56

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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.