Home / 27,040.80-40,519.40-21,103.61

Finding the Fourth Proportional to 27,040.80, 40,519.40 and 21,103.61

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Solution

The fourth proportional to 27,040.80, 40,519.40 and 21,103.61 is: 31,622.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,040.80 : 40,519.40 = 21,103.61 : x
  2. Step 2: Convert to fraction form
    27,040.80/40,519.40 = 21,103.61/x
  3. Step 3: Cross multiply
    27,040.80x = 40,519.40 × 21,103.61
  4. Step 4: Simplify right side
    27,040.80x = 855,105,306.92
  5. Step 5: Solve for x
    x = 855,105,306.92/27,040.80
  6. Step 6: Final answer
    x = 31,622.78

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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.