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Finding the Fourth Proportional to 21,338.87, 32,008.30 and 7,299.02

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Solution

The fourth proportional to 21,338.87, 32,008.30 and 7,299.02 is: 10,948.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.87 : 32,008.30 = 7,299.02 : x
  2. Step 2: Convert to fraction form
    21,338.87/32,008.30 = 7,299.02/x
  3. Step 3: Cross multiply
    21,338.87x = 32,008.30 × 7,299.02
  4. Step 4: Simplify right side
    21,338.87x = 233,629,283.64
  5. Step 5: Solve for x
    x = 233,629,283.64/21,338.87
  6. Step 6: Final answer
    x = 10,948.53

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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.