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Finding the Fourth Proportional to 21,938.84, 32,861.04 and 12,552.50

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Solution

The fourth proportional to 21,938.84, 32,861.04 and 12,552.50 is: 18,801.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,938.84 : 32,861.04 = 12,552.50 : x
  2. Step 2: Convert to fraction form
    21,938.84/32,861.04 = 12,552.50/x
  3. Step 3: Cross multiply
    21,938.84x = 32,861.04 × 12,552.50
  4. Step 4: Simplify right side
    21,938.84x = 412,488,204.60
  5. Step 5: Solve for x
    x = 412,488,204.60/21,938.84
  6. Step 6: Final answer
    x = 18,801.73

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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.