Home / 12,586.66-18,868.19-4,260.85

Finding the Fourth Proportional to 12,586.66, 18,868.19 and 4,260.85

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Solution

The fourth proportional to 12,586.66, 18,868.19 and 4,260.85 is: 6,387.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586.66 : 18,868.19 = 4,260.85 : x
  2. Step 2: Convert to fraction form
    12,586.66/18,868.19 = 4,260.85/x
  3. Step 3: Cross multiply
    12,586.66x = 18,868.19 × 4,260.85
  4. Step 4: Simplify right side
    12,586.66x = 80,394,588.99
  5. Step 5: Solve for x
    x = 80,394,588.99/12,586.66
  6. Step 6: Final answer
    x = 6,387.29

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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.