Home / 18,217.66-25,133.07-11,131.78

Finding the Fourth Proportional to 18,217.66, 25,133.07 and 11,131.78

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Solution

The fourth proportional to 18,217.66, 25,133.07 and 11,131.78 is: 15,357.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.66 : 25,133.07 = 11,131.78 : x
  2. Step 2: Convert to fraction form
    18,217.66/25,133.07 = 11,131.78/x
  3. Step 3: Cross multiply
    18,217.66x = 25,133.07 × 11,131.78
  4. Step 4: Simplify right side
    18,217.66x = 279,775,805.96
  5. Step 5: Solve for x
    x = 279,775,805.96/18,217.66
  6. Step 6: Final answer
    x = 15,357.40

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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.