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Finding the Fourth Proportional to 21,998.52, 33,002.78 and 7,207.11

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Solution

The fourth proportional to 21,998.52, 33,002.78 and 7,207.11 is: 10,812.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.52 : 33,002.78 = 7,207.11 : x
  2. Step 2: Convert to fraction form
    21,998.52/33,002.78 = 7,207.11/x
  3. Step 3: Cross multiply
    21,998.52x = 33,002.78 × 7,207.11
  4. Step 4: Simplify right side
    21,998.52x = 237,854,629.73
  5. Step 5: Solve for x
    x = 237,854,629.73/21,998.52
  6. Step 6: Final answer
    x = 10,812.30

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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.