Home / 27,999.45-41,920.20-21,770.55

Finding the Fourth Proportional to 27,999.45, 41,920.20 and 21,770.55

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Solution

The fourth proportional to 27,999.45, 41,920.20 and 21,770.55 is: 32,594.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,999.45 : 41,920.20 = 21,770.55 : x
  2. Step 2: Convert to fraction form
    27,999.45/41,920.20 = 21,770.55/x
  3. Step 3: Cross multiply
    27,999.45x = 41,920.20 × 21,770.55
  4. Step 4: Simplify right side
    27,999.45x = 912,625,810.11
  5. Step 5: Solve for x
    x = 912,625,810.11/27,999.45
  6. Step 6: Final answer
    x = 32,594.42

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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.