Home / 27,712.56-38,193.87-20,982.06

Finding the Fourth Proportional to 27,712.56, 38,193.87 and 20,982.06

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Solution

The fourth proportional to 27,712.56, 38,193.87 and 20,982.06 is: 28,917.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,712.56 : 38,193.87 = 20,982.06 : x
  2. Step 2: Convert to fraction form
    27,712.56/38,193.87 = 20,982.06/x
  3. Step 3: Cross multiply
    27,712.56x = 38,193.87 × 20,982.06
  4. Step 4: Simplify right side
    27,712.56x = 801,386,071.97
  5. Step 5: Solve for x
    x = 801,386,071.97/27,712.56
  6. Step 6: Final answer
    x = 28,917.79

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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.