Home / 27,891.75-38,489.55-15,954.78

Finding the Fourth Proportional to 27,891.75, 38,489.55 and 15,954.78

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Solution

The fourth proportional to 27,891.75, 38,489.55 and 15,954.78 is: 22,016.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,891.75 : 38,489.55 = 15,954.78 : x
  2. Step 2: Convert to fraction form
    27,891.75/38,489.55 = 15,954.78/x
  3. Step 3: Cross multiply
    27,891.75x = 38,489.55 × 15,954.78
  4. Step 4: Simplify right side
    27,891.75x = 614,092,302.55
  5. Step 5: Solve for x
    x = 614,092,302.55/27,891.75
  6. Step 6: Final answer
    x = 22,016.99

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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.