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Finding the Fourth Proportional to 21,998.73, 32,998.10 and 7,207.73

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Solution

The fourth proportional to 21,998.73, 32,998.10 and 7,207.73 is: 10,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.73 : 32,998.10 = 7,207.73 : x
  2. Step 2: Convert to fraction form
    21,998.73/32,998.10 = 7,207.73/x
  3. Step 3: Cross multiply
    21,998.73x = 32,998.10 × 7,207.73
  4. Step 4: Simplify right side
    21,998.73x = 237,841,395.31
  5. Step 5: Solve for x
    x = 237,841,395.31/21,998.73
  6. Step 6: Final answer
    x = 10,811.60

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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.