Home / 20,668.84-31,000.97-5,677.11

Finding the Fourth Proportional to 20,668.84, 31,000.97 and 5,677.11

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Solution

The fourth proportional to 20,668.84, 31,000.97 and 5,677.11 is: 8,515.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.84 : 31,000.97 = 5,677.11 : x
  2. Step 2: Convert to fraction form
    20,668.84/31,000.97 = 5,677.11/x
  3. Step 3: Cross multiply
    20,668.84x = 31,000.97 × 5,677.11
  4. Step 4: Simplify right side
    20,668.84x = 175,995,930.99
  5. Step 5: Solve for x
    x = 175,995,930.99/20,668.84
  6. Step 6: Final answer
    x = 8,515.04

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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.