Home / 20,104.98-27,738.55-13,391.70

Finding the Fourth Proportional to 20,104.98, 27,738.55 and 13,391.70

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Solution

The fourth proportional to 20,104.98, 27,738.55 and 13,391.70 is: 18,476.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.98 : 27,738.55 = 13,391.70 : x
  2. Step 2: Convert to fraction form
    20,104.98/27,738.55 = 13,391.70/x
  3. Step 3: Cross multiply
    20,104.98x = 27,738.55 × 13,391.70
  4. Step 4: Simplify right side
    20,104.98x = 371,466,252.76
  5. Step 5: Solve for x
    x = 371,466,252.76/20,104.98
  6. Step 6: Final answer
    x = 18,476.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.