Home / 20,221.80-27,902.76-11,267.28

Finding the Fourth Proportional to 20,221.80, 27,902.76 and 11,267.28

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Solution

The fourth proportional to 20,221.80, 27,902.76 and 11,267.28 is: 15,546.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.80 : 27,902.76 = 11,267.28 : x
  2. Step 2: Convert to fraction form
    20,221.80/27,902.76 = 11,267.28/x
  3. Step 3: Cross multiply
    20,221.80x = 27,902.76 × 11,267.28
  4. Step 4: Simplify right side
    20,221.80x = 314,388,209.69
  5. Step 5: Solve for x
    x = 314,388,209.69/20,221.80
  6. Step 6: Final answer
    x = 15,546.99

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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.