Home / 26,768.78-36,939.92-15,438.75

Finding the Fourth Proportional to 26,768.78, 36,939.92 and 15,438.75

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Solution

The fourth proportional to 26,768.78, 36,939.92 and 15,438.75 is: 21,304.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,768.78 : 36,939.92 = 15,438.75 : x
  2. Step 2: Convert to fraction form
    26,768.78/36,939.92 = 15,438.75/x
  3. Step 3: Cross multiply
    26,768.78x = 36,939.92 × 15,438.75
  4. Step 4: Simplify right side
    26,768.78x = 570,306,189.90
  5. Step 5: Solve for x
    x = 570,306,189.90/26,768.78
  6. Step 6: Final answer
    x = 21,304.90

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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.