Home / 20,271.91-27,974.04-11,319.97

Finding the Fourth Proportional to 20,271.91, 27,974.04 and 11,319.97

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Solution

The fourth proportional to 20,271.91, 27,974.04 and 11,319.97 is: 15,620.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.91 : 27,974.04 = 11,319.97 : x
  2. Step 2: Convert to fraction form
    20,271.91/27,974.04 = 11,319.97/x
  3. Step 3: Cross multiply
    20,271.91x = 27,974.04 × 11,319.97
  4. Step 4: Simplify right side
    20,271.91x = 316,665,293.58
  5. Step 5: Solve for x
    x = 316,665,293.58/20,271.91
  6. Step 6: Final answer
    x = 15,620.89

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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.