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Finding the Fourth Proportional to 16,940.70, 25,415.10 and 8,168.40

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Solution

The fourth proportional to 16,940.70, 25,415.10 and 8,168.40 is: 12,254.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,940.70 : 25,415.10 = 8,168.40 : x
  2. Step 2: Convert to fraction form
    16,940.70/25,415.10 = 8,168.40/x
  3. Step 3: Cross multiply
    16,940.70x = 25,415.10 × 8,168.40
  4. Step 4: Simplify right side
    16,940.70x = 207,600,702.84
  5. Step 5: Solve for x
    x = 207,600,702.84/16,940.70
  6. Step 6: Final answer
    x = 12,254.55

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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.