Home / 27,979.73-38,626.28-21,591.96

Finding the Fourth Proportional to 27,979.73, 38,626.28 and 21,591.96

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Solution

The fourth proportional to 27,979.73, 38,626.28 and 21,591.96 is: 29,807.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.73 : 38,626.28 = 21,591.96 : x
  2. Step 2: Convert to fraction form
    27,979.73/38,626.28 = 21,591.96/x
  3. Step 3: Cross multiply
    27,979.73x = 38,626.28 × 21,591.96
  4. Step 4: Simplify right side
    27,979.73x = 834,016,984.75
  5. Step 5: Solve for x
    x = 834,016,984.75/27,979.73
  6. Step 6: Final answer
    x = 29,807.91

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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.