Home / 18,871.67-25,997.88-13,195.79

Finding the Fourth Proportional to 18,871.67, 25,997.88 and 13,195.79

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Solution

The fourth proportional to 18,871.67, 25,997.88 and 13,195.79 is: 18,178.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.67 : 25,997.88 = 13,195.79 : x
  2. Step 2: Convert to fraction form
    18,871.67/25,997.88 = 13,195.79/x
  3. Step 3: Cross multiply
    18,871.67x = 25,997.88 × 13,195.79
  4. Step 4: Simplify right side
    18,871.67x = 343,062,434.94
  5. Step 5: Solve for x
    x = 343,062,434.94/18,871.67
  6. Step 6: Final answer
    x = 18,178.71

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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.