Home / 27,778.20-41,667.30-9,310.20

Finding the Fourth Proportional to 27,778.20, 41,667.30 and 9,310.20

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Solution

The fourth proportional to 27,778.20, 41,667.30 and 9,310.20 is: 13,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,778.20 : 41,667.30 = 9,310.20 : x
  2. Step 2: Convert to fraction form
    27,778.20/41,667.30 = 9,310.20/x
  3. Step 3: Cross multiply
    27,778.20x = 41,667.30 × 9,310.20
  4. Step 4: Simplify right side
    27,778.20x = 387,930,896.46
  5. Step 5: Solve for x
    x = 387,930,896.46/27,778.20
  6. Step 6: Final answer
    x = 13,965.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.