Home / 26,480.43-39,660.15-12,639.15

Finding the Fourth Proportional to 26,480.43, 39,660.15 and 12,639.15

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Solution

The fourth proportional to 26,480.43, 39,660.15 and 12,639.15 is: 18,929.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,480.43 : 39,660.15 = 12,639.15 : x
  2. Step 2: Convert to fraction form
    26,480.43/39,660.15 = 12,639.15/x
  3. Step 3: Cross multiply
    26,480.43x = 39,660.15 × 12,639.15
  4. Step 4: Simplify right side
    26,480.43x = 501,270,584.87
  5. Step 5: Solve for x
    x = 501,270,584.87/26,480.43
  6. Step 6: Final answer
    x = 18,929.85

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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.