Home / 27,987.73-38,618.98-15,886.33

Finding the Fourth Proportional to 27,987.73, 38,618.98 and 15,886.33

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Solution

The fourth proportional to 27,987.73, 38,618.98 and 15,886.33 is: 21,920.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.73 : 38,618.98 = 15,886.33 : x
  2. Step 2: Convert to fraction form
    27,987.73/38,618.98 = 15,886.33/x
  3. Step 3: Cross multiply
    27,987.73x = 38,618.98 × 15,886.33
  4. Step 4: Simplify right side
    27,987.73x = 613,513,724.28
  5. Step 5: Solve for x
    x = 613,513,724.28/27,987.73
  6. Step 6: Final answer
    x = 21,920.81

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Similar ratio
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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.