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Finding the Fourth Proportional to 10,072.78, 15,103.05 and 8,592.78

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Solution

The fourth proportional to 10,072.78, 15,103.05 and 8,592.78 is: 12,883.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,072.78 : 15,103.05 = 8,592.78 : x
  2. Step 2: Convert to fraction form
    10,072.78/15,103.05 = 8,592.78/x
  3. Step 3: Cross multiply
    10,072.78x = 15,103.05 × 8,592.78
  4. Step 4: Simplify right side
    10,072.78x = 129,777,185.98
  5. Step 5: Solve for x
    x = 129,777,185.98/10,072.78
  6. Step 6: Final answer
    x = 12,883.95

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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.