Home / 15,591.75-21,517.10-8,518.64

Finding the Fourth Proportional to 15,591.75, 21,517.10 and 8,518.64

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Solution

The fourth proportional to 15,591.75, 21,517.10 and 8,518.64 is: 11,755.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.75 : 21,517.10 = 8,518.64 : x
  2. Step 2: Convert to fraction form
    15,591.75/21,517.10 = 8,518.64/x
  3. Step 3: Cross multiply
    15,591.75x = 21,517.10 × 8,518.64
  4. Step 4: Simplify right side
    15,591.75x = 183,296,278.57
  5. Step 5: Solve for x
    x = 183,296,278.57/15,591.75
  6. Step 6: Final answer
    x = 11,755.98

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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.