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Finding the Fourth Proportional to 22,220.80, 33,331.20 and 18,764.80

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Solution

The fourth proportional to 22,220.80, 33,331.20 and 18,764.80 is: 28,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,220.80 : 33,331.20 = 18,764.80 : x
  2. Step 2: Convert to fraction form
    22,220.80/33,331.20 = 18,764.80/x
  3. Step 3: Cross multiply
    22,220.80x = 33,331.20 × 18,764.80
  4. Step 4: Simplify right side
    22,220.80x = 625,453,301.76
  5. Step 5: Solve for x
    x = 625,453,301.76/22,220.80
  6. Step 6: Final answer
    x = 28,147.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.