Home / 26,439.86-39,648.13-12,388.57

Finding the Fourth Proportional to 26,439.86, 39,648.13 and 12,388.57

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Solution

The fourth proportional to 26,439.86, 39,648.13 and 12,388.57 is: 18,577.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,439.86 : 39,648.13 = 12,388.57 : x
  2. Step 2: Convert to fraction form
    26,439.86/39,648.13 = 12,388.57/x
  3. Step 3: Cross multiply
    26,439.86x = 39,648.13 × 12,388.57
  4. Step 4: Simplify right side
    26,439.86x = 491,183,633.87
  5. Step 5: Solve for x
    x = 491,183,633.87/26,439.86
  6. Step 6: Final answer
    x = 18,577.39

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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.