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Finding the Fourth Proportional to 21,885.73, 32,836.87 and 8,568.25

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Solution

The fourth proportional to 21,885.73, 32,836.87 and 8,568.25 is: 12,855.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,885.73 : 32,836.87 = 8,568.25 : x
  2. Step 2: Convert to fraction form
    21,885.73/32,836.87 = 8,568.25/x
  3. Step 3: Cross multiply
    21,885.73x = 32,836.87 × 8,568.25
  4. Step 4: Simplify right side
    21,885.73x = 281,354,347.19
  5. Step 5: Solve for x
    x = 281,354,347.19/21,885.73
  6. Step 6: Final answer
    x = 12,855.61

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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.