Home / 27,728.04-38,260.29-15,791.61

Finding the Fourth Proportional to 27,728.04, 38,260.29 and 15,791.61

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Solution

The fourth proportional to 27,728.04, 38,260.29 and 15,791.61 is: 21,789.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,728.04 : 38,260.29 = 15,791.61 : x
  2. Step 2: Convert to fraction form
    27,728.04/38,260.29 = 15,791.61/x
  3. Step 3: Cross multiply
    27,728.04x = 38,260.29 × 15,791.61
  4. Step 4: Simplify right side
    27,728.04x = 604,191,578.17
  5. Step 5: Solve for x
    x = 604,191,578.17/27,728.04
  6. Step 6: Final answer
    x = 21,789.91

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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.