Home / 27,728.61-38,265.46-15,791.95

Finding the Fourth Proportional to 27,728.61, 38,265.46 and 15,791.95

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Solution

The fourth proportional to 27,728.61, 38,265.46 and 15,791.95 is: 21,792.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,728.61 : 38,265.46 = 15,791.95 : x
  2. Step 2: Convert to fraction form
    27,728.61/38,265.46 = 15,791.95/x
  3. Step 3: Cross multiply
    27,728.61x = 38,265.46 × 15,791.95
  4. Step 4: Simplify right side
    27,728.61x = 604,286,231.05
  5. Step 5: Solve for x
    x = 604,286,231.05/27,728.61
  6. Step 6: Final answer
    x = 21,792.88

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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.