Home / 20,552.22-30,830.70-7,221.12

Finding the Fourth Proportional to 20,552.22, 30,830.70 and 7,221.12

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Solution

The fourth proportional to 20,552.22, 30,830.70 and 7,221.12 is: 10,832.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.22 : 30,830.70 = 7,221.12 : x
  2. Step 2: Convert to fraction form
    20,552.22/30,830.70 = 7,221.12/x
  3. Step 3: Cross multiply
    20,552.22x = 30,830.70 × 7,221.12
  4. Step 4: Simplify right side
    20,552.22x = 222,632,184.38
  5. Step 5: Solve for x
    x = 222,632,184.38/20,552.22
  6. Step 6: Final answer
    x = 10,832.51

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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.