Home / 26,661.78-39,992.88-9,131.76

Finding the Fourth Proportional to 26,661.78, 39,992.88 and 9,131.76

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Solution

The fourth proportional to 26,661.78, 39,992.88 and 9,131.76 is: 13,697.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,661.78 : 39,992.88 = 9,131.76 : x
  2. Step 2: Convert to fraction form
    26,661.78/39,992.88 = 9,131.76/x
  3. Step 3: Cross multiply
    26,661.78x = 39,992.88 × 9,131.76
  4. Step 4: Simplify right side
    26,661.78x = 365,205,381.87
  5. Step 5: Solve for x
    x = 365,205,381.87/26,661.78
  6. Step 6: Final answer
    x = 13,697.71

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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.