Home / 20,218.91-27,902.16-11,722.70

Finding the Fourth Proportional to 20,218.91, 27,902.16 and 11,722.70

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Solution

The fourth proportional to 20,218.91, 27,902.16 and 11,722.70 is: 16,177.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.91 : 27,902.16 = 11,722.70 : x
  2. Step 2: Convert to fraction form
    20,218.91/27,902.16 = 11,722.70/x
  3. Step 3: Cross multiply
    20,218.91x = 27,902.16 × 11,722.70
  4. Step 4: Simplify right side
    20,218.91x = 327,088,651.03
  5. Step 5: Solve for x
    x = 327,088,651.03/20,218.91
  6. Step 6: Final answer
    x = 16,177.36

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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.