Home / 18,231.75-25,159.95-11,162.88

Finding the Fourth Proportional to 18,231.75, 25,159.95 and 11,162.88

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Solution

The fourth proportional to 18,231.75, 25,159.95 and 11,162.88 is: 15,404.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.75 : 25,159.95 = 11,162.88 : x
  2. Step 2: Convert to fraction form
    18,231.75/25,159.95 = 11,162.88/x
  3. Step 3: Cross multiply
    18,231.75x = 25,159.95 × 11,162.88
  4. Step 4: Simplify right side
    18,231.75x = 280,857,502.66
  5. Step 5: Solve for x
    x = 280,857,502.66/18,231.75
  6. Step 6: Final answer
    x = 15,404.86

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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.