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Finding the Fourth Proportional to 21,717, 32,575.50 and 5,301

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Solution

The fourth proportional to 21,717, 32,575.50 and 5,301 is: 7,951.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,717 : 32,575.50 = 5,301 : x
  2. Step 2: Convert to fraction form
    21,717/32,575.50 = 5,301/x
  3. Step 3: Cross multiply
    21,717x = 32,575.50 × 5,301
  4. Step 4: Simplify right side
    21,717x = 172,682,725.50
  5. Step 5: Solve for x
    x = 172,682,725.50/21,717
  6. Step 6: Final answer
    x = 7,951.50

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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.