Home / 20,552.96-28,363.04-11,121.44

Finding the Fourth Proportional to 20,552.96, 28,363.04 and 11,121.44

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Solution

The fourth proportional to 20,552.96, 28,363.04 and 11,121.44 is: 15,347.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.96 : 28,363.04 = 11,121.44 : x
  2. Step 2: Convert to fraction form
    20,552.96/28,363.04 = 11,121.44/x
  3. Step 3: Cross multiply
    20,552.96x = 28,363.04 × 11,121.44
  4. Step 4: Simplify right side
    20,552.96x = 315,437,847.58
  5. Step 5: Solve for x
    x = 315,437,847.58/20,552.96
  6. Step 6: Final answer
    x = 15,347.56

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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.