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Finding the Fourth Proportional to 21,531.22, 32,311.59 and 8,383.66

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Solution

The fourth proportional to 21,531.22, 32,311.59 and 8,383.66 is: 12,581.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.22 : 32,311.59 = 8,383.66 : x
  2. Step 2: Convert to fraction form
    21,531.22/32,311.59 = 8,383.66/x
  3. Step 3: Cross multiply
    21,531.22x = 32,311.59 × 8,383.66
  4. Step 4: Simplify right side
    21,531.22x = 270,889,384.62
  5. Step 5: Solve for x
    x = 270,889,384.62/21,531.22
  6. Step 6: Final answer
    x = 12,581.24

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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.