Home / 17,208.80-25,815.12-5,517.92

Finding the Fourth Proportional to 17,208.80, 25,815.12 and 5,517.92

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Solution

The fourth proportional to 17,208.80, 25,815.12 and 5,517.92 is: 8,277.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,208.80 : 25,815.12 = 5,517.92 : x
  2. Step 2: Convert to fraction form
    17,208.80/25,815.12 = 5,517.92/x
  3. Step 3: Cross multiply
    17,208.80x = 25,815.12 × 5,517.92
  4. Step 4: Simplify right side
    17,208.80x = 142,445,766.95
  5. Step 5: Solve for x
    x = 142,445,766.95/17,208.80
  6. Step 6: Final answer
    x = 8,277.50

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1.5x scale

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.