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Finding the Fourth Proportional to 21,399.68, 32,098.56 and 6,608

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Solution

The fourth proportional to 21,399.68, 32,098.56 and 6,608 is: 9,911.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,399.68 : 32,098.56 = 6,608 : x
  2. Step 2: Convert to fraction form
    21,399.68/32,098.56 = 6,608/x
  3. Step 3: Cross multiply
    21,399.68x = 32,098.56 × 6,608
  4. Step 4: Simplify right side
    21,399.68x = 212,107,284.48
  5. Step 5: Solve for x
    x = 212,107,284.48/21,399.68
  6. Step 6: Final answer
    x = 9,911.70

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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.