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Finding the Fourth Proportional to 28,958.80, 39,944.90 and 22,234.16

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Solution

The fourth proportional to 28,958.80, 39,944.90 and 22,234.16 is: 30,669.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,958.80 : 39,944.90 = 22,234.16 : x
  2. Step 2: Convert to fraction form
    28,958.80/39,944.90 = 22,234.16/x
  3. Step 3: Cross multiply
    28,958.80x = 39,944.90 × 22,234.16
  4. Step 4: Simplify right side
    28,958.80x = 888,141,297.78
  5. Step 5: Solve for x
    x = 888,141,297.78/28,958.80
  6. Step 6: Final answer
    x = 30,669.13

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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.