Home / 10,020.80-13,819.92-6,480.56

Finding the Fourth Proportional to 10,020.80, 13,819.92 and 6,480.56

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Solution

The fourth proportional to 10,020.80, 13,819.92 and 6,480.56 is: 8,937.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,020.80 : 13,819.92 = 6,480.56 : x
  2. Step 2: Convert to fraction form
    10,020.80/13,819.92 = 6,480.56/x
  3. Step 3: Cross multiply
    10,020.80x = 13,819.92 × 6,480.56
  4. Step 4: Simplify right side
    10,020.80x = 89,560,751.66
  5. Step 5: Solve for x
    x = 89,560,751.66/10,020.80
  6. Step 6: Final answer
    x = 8,937.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.