Home / 16,961.45-25,436.10-8,638.70

Finding the Fourth Proportional to 16,961.45, 25,436.10 and 8,638.70

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Solution

The fourth proportional to 16,961.45, 25,436.10 and 8,638.70 is: 12,954.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,961.45 : 25,436.10 = 8,638.70 : x
  2. Step 2: Convert to fraction form
    16,961.45/25,436.10 = 8,638.70/x
  3. Step 3: Cross multiply
    16,961.45x = 25,436.10 × 8,638.70
  4. Step 4: Simplify right side
    16,961.45x = 219,734,837.07
  5. Step 5: Solve for x
    x = 219,734,837.07/16,961.45
  6. Step 6: Final answer
    x = 12,954.96

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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.