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Finding the Fourth Proportional to 18,249.29, 25,184.01 and 9,865.79

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Solution

The fourth proportional to 18,249.29, 25,184.01 and 9,865.79 is: 13,614.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,249.29 : 25,184.01 = 9,865.79 : x
  2. Step 2: Convert to fraction form
    18,249.29/25,184.01 = 9,865.79/x
  3. Step 3: Cross multiply
    18,249.29x = 25,184.01 × 9,865.79
  4. Step 4: Simplify right side
    18,249.29x = 248,460,028.10
  5. Step 5: Solve for x
    x = 248,460,028.10/18,249.29
  6. Step 6: Final answer
    x = 13,614.78

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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.