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Finding the Fourth Proportional to 22,305.01, 30,780.87 and 12,873.56

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Solution

The fourth proportional to 22,305.01, 30,780.87 and 12,873.56 is: 17,765.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,305.01 : 30,780.87 = 12,873.56 : x
  2. Step 2: Convert to fraction form
    22,305.01/30,780.87 = 12,873.56/x
  3. Step 3: Cross multiply
    22,305.01x = 30,780.87 × 12,873.56
  4. Step 4: Simplify right side
    22,305.01x = 396,259,376.80
  5. Step 5: Solve for x
    x = 396,259,376.80/22,305.01
  6. Step 6: Final answer
    x = 17,765.49

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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.