Home / 27,728.39-38,260.76-15,791.95

Finding the Fourth Proportional to 27,728.39, 38,260.76 and 15,791.95

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Solution

The fourth proportional to 27,728.39, 38,260.76 and 15,791.95 is: 21,790.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,728.39 : 38,260.76 = 15,791.95 : x
  2. Step 2: Convert to fraction form
    27,728.39/38,260.76 = 15,791.95/x
  3. Step 3: Cross multiply
    27,728.39x = 38,260.76 × 15,791.95
  4. Step 4: Simplify right side
    27,728.39x = 604,211,929.92
  5. Step 5: Solve for x
    x = 604,211,929.92/27,728.39
  6. Step 6: Final answer
    x = 21,790.37

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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.