Home / 15,189.73-20,961.74-8,474.95

Finding the Fourth Proportional to 15,189.73, 20,961.74 and 8,474.95

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Solution

The fourth proportional to 15,189.73, 20,961.74 and 8,474.95 is: 11,695.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189.73 : 20,961.74 = 8,474.95 : x
  2. Step 2: Convert to fraction form
    15,189.73/20,961.74 = 8,474.95/x
  3. Step 3: Cross multiply
    15,189.73x = 20,961.74 × 8,474.95
  4. Step 4: Simplify right side
    15,189.73x = 177,649,757.09
  5. Step 5: Solve for x
    x = 177,649,757.09/15,189.73
  6. Step 6: Final answer
    x = 11,695.39

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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.