Home / 26,208.18-39,318.75-8,679.78

Finding the Fourth Proportional to 26,208.18, 39,318.75 and 8,679.78

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Solution

The fourth proportional to 26,208.18, 39,318.75 and 8,679.78 is: 13,021.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,208.18 : 39,318.75 = 8,679.78 : x
  2. Step 2: Convert to fraction form
    26,208.18/39,318.75 = 8,679.78/x
  3. Step 3: Cross multiply
    26,208.18x = 39,318.75 × 8,679.78
  4. Step 4: Simplify right side
    26,208.18x = 341,278,099.88
  5. Step 5: Solve for x
    x = 341,278,099.88/26,208.18
  6. Step 6: Final answer
    x = 13,021.82

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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.