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Finding the Fourth Proportional to 17,951.80, 26,928.90 and 6,105.40

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Solution

The fourth proportional to 17,951.80, 26,928.90 and 6,105.40 is: 9,158.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,951.80 : 26,928.90 = 6,105.40 : x
  2. Step 2: Convert to fraction form
    17,951.80/26,928.90 = 6,105.40/x
  3. Step 3: Cross multiply
    17,951.80x = 26,928.90 × 6,105.40
  4. Step 4: Simplify right side
    17,951.80x = 164,411,706.06
  5. Step 5: Solve for x
    x = 164,411,706.06/17,951.80
  6. Step 6: Final answer
    x = 9,158.51

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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.