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Finding the Fourth Proportional to 21,479.26, 32,219.07 and 6,687.58

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Solution

The fourth proportional to 21,479.26, 32,219.07 and 6,687.58 is: 10,031.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.26 : 32,219.07 = 6,687.58 : x
  2. Step 2: Convert to fraction form
    21,479.26/32,219.07 = 6,687.58/x
  3. Step 3: Cross multiply
    21,479.26x = 32,219.07 × 6,687.58
  4. Step 4: Simplify right side
    21,479.26x = 215,467,608.15
  5. Step 5: Solve for x
    x = 215,467,608.15/21,479.26
  6. Step 6: Final answer
    x = 10,031.43

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1.5x scale

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.