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Finding the Fourth Proportional to 22,556.80, 33,770.40 and 13,808.80

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Solution

The fourth proportional to 22,556.80, 33,770.40 and 13,808.80 is: 20,673.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,556.80 : 33,770.40 = 13,808.80 : x
  2. Step 2: Convert to fraction form
    22,556.80/33,770.40 = 13,808.80/x
  3. Step 3: Cross multiply
    22,556.80x = 33,770.40 × 13,808.80
  4. Step 4: Simplify right side
    22,556.80x = 466,328,699.52
  5. Step 5: Solve for x
    x = 466,328,699.52/22,556.80
  6. Step 6: Final answer
    x = 20,673.53

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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.