Home / 13,292.80-19,930.56-6,371.20

Finding the Fourth Proportional to 13,292.80, 19,930.56 and 6,371.20

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Solution

The fourth proportional to 13,292.80, 19,930.56 and 6,371.20 is: 9,552.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,292.80 : 19,930.56 = 6,371.20 : x
  2. Step 2: Convert to fraction form
    13,292.80/19,930.56 = 6,371.20/x
  3. Step 3: Cross multiply
    13,292.80x = 19,930.56 × 6,371.20
  4. Step 4: Simplify right side
    13,292.80x = 126,981,583.87
  5. Step 5: Solve for x
    x = 126,981,583.87/13,292.80
  6. Step 6: Final answer
    x = 9,552.66

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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.