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Finding the Fourth Proportional to 20,481.81, 30,725.96 and 7,333.89

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Solution

The fourth proportional to 20,481.81, 30,725.96 and 7,333.89 is: 11,002.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.81 : 30,725.96 = 7,333.89 : x
  2. Step 2: Convert to fraction form
    20,481.81/30,725.96 = 7,333.89/x
  3. Step 3: Cross multiply
    20,481.81x = 30,725.96 × 7,333.89
  4. Step 4: Simplify right side
    20,481.81x = 225,340,774.11
  5. Step 5: Solve for x
    x = 225,340,774.11/20,481.81
  6. Step 6: Final answer
    x = 11,002.00

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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.