Home / 27,042.80-40,522.39-21,105.61

Finding the Fourth Proportional to 27,042.80, 40,522.39 and 21,105.61

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Solution

The fourth proportional to 27,042.80, 40,522.39 and 21,105.61 is: 31,625.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,042.80 : 40,522.39 = 21,105.61 : x
  2. Step 2: Convert to fraction form
    27,042.80/40,522.39 = 21,105.61/x
  3. Step 3: Cross multiply
    27,042.80x = 40,522.39 × 21,105.61
  4. Step 4: Simplify right side
    27,042.80x = 855,249,759.61
  5. Step 5: Solve for x
    x = 855,249,759.61/27,042.80
  6. Step 6: Final answer
    x = 31,625.78

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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.