Home / 18,216.38-25,149.54-11,939.69

Finding the Fourth Proportional to 18,216.38, 25,149.54 and 11,939.69

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Solution

The fourth proportional to 18,216.38, 25,149.54 and 11,939.69 is: 16,483.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.38 : 25,149.54 = 11,939.69 : x
  2. Step 2: Convert to fraction form
    18,216.38/25,149.54 = 11,939.69/x
  3. Step 3: Cross multiply
    18,216.38x = 25,149.54 × 11,939.69
  4. Step 4: Simplify right side
    18,216.38x = 300,277,585.49
  5. Step 5: Solve for x
    x = 300,277,585.49/18,216.38
  6. Step 6: Final answer
    x = 16,483.94

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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.