Home / 18,612.82-25,685.76-10,115.02

Finding the Fourth Proportional to 18,612.82, 25,685.76 and 10,115.02

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Solution

The fourth proportional to 18,612.82, 25,685.76 and 10,115.02 is: 13,958.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,612.82 : 25,685.76 = 10,115.02 : x
  2. Step 2: Convert to fraction form
    18,612.82/25,685.76 = 10,115.02/x
  3. Step 3: Cross multiply
    18,612.82x = 25,685.76 × 10,115.02
  4. Step 4: Simplify right side
    18,612.82x = 259,811,976.12
  5. Step 5: Solve for x
    x = 259,811,976.12/18,612.82
  6. Step 6: Final answer
    x = 13,958.76

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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.