Home / 20,273.25-27,976.77-11,320.89

Finding the Fourth Proportional to 20,273.25, 27,976.77 and 11,320.89

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Solution

The fourth proportional to 20,273.25, 27,976.77 and 11,320.89 is: 15,622.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.25 : 27,976.77 = 11,320.89 : x
  2. Step 2: Convert to fraction form
    20,273.25/27,976.77 = 11,320.89/x
  3. Step 3: Cross multiply
    20,273.25x = 27,976.77 × 11,320.89
  4. Step 4: Simplify right side
    20,273.25x = 316,721,935.73
  5. Step 5: Solve for x
    x = 316,721,935.73/20,273.25
  6. Step 6: Final answer
    x = 15,622.65

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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.