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Finding the Fourth Proportional to 21,909.73, 32,869.02 and 6,919.19

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Solution

The fourth proportional to 21,909.73, 32,869.02 and 6,919.19 is: 10,380.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,909.73 : 32,869.02 = 6,919.19 : x
  2. Step 2: Convert to fraction form
    21,909.73/32,869.02 = 6,919.19/x
  3. Step 3: Cross multiply
    21,909.73x = 32,869.02 × 6,919.19
  4. Step 4: Simplify right side
    21,909.73x = 227,427,059.37
  5. Step 5: Solve for x
    x = 227,427,059.37/21,909.73
  6. Step 6: Final answer
    x = 10,380.19

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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.