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Finding the Fourth Proportional to 21,397.70, 32,098.08 and 6,604.70

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Solution

The fourth proportional to 21,397.70, 32,098.08 and 6,604.70 is: 9,907.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,397.70 : 32,098.08 = 6,604.70 : x
  2. Step 2: Convert to fraction form
    21,397.70/32,098.08 = 6,604.70/x
  3. Step 3: Cross multiply
    21,397.70x = 32,098.08 × 6,604.70
  4. Step 4: Simplify right side
    21,397.70x = 211,998,028.49
  5. Step 5: Solve for x
    x = 211,998,028.49/21,397.70
  6. Step 6: Final answer
    x = 9,907.52

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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.