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Finding the Fourth Proportional to 18,360.38, 25,339.50 and 10,908.38

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Solution

The fourth proportional to 18,360.38, 25,339.50 and 10,908.38 is: 15,054.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360.38 : 25,339.50 = 10,908.38 : x
  2. Step 2: Convert to fraction form
    18,360.38/25,339.50 = 10,908.38/x
  3. Step 3: Cross multiply
    18,360.38x = 25,339.50 × 10,908.38
  4. Step 4: Simplify right side
    18,360.38x = 276,412,768.31
  5. Step 5: Solve for x
    x = 276,412,768.31/18,360.38
  6. Step 6: Final answer
    x = 15,054.85

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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.