Home / 15,591.54-21,517.20-8,518.08

Finding the Fourth Proportional to 15,591.54, 21,517.20 and 8,518.08

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Solution

The fourth proportional to 15,591.54, 21,517.20 and 8,518.08 is: 11,755.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.54 : 21,517.20 = 8,518.08 : x
  2. Step 2: Convert to fraction form
    15,591.54/21,517.20 = 8,518.08/x
  3. Step 3: Cross multiply
    15,591.54x = 21,517.20 × 8,518.08
  4. Step 4: Simplify right side
    15,591.54x = 183,285,230.98
  5. Step 5: Solve for x
    x = 183,285,230.98/15,591.54
  6. Step 6: Final answer
    x = 11,755.43

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1.5x scale

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.