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Finding the Fourth Proportional to 17,990.82, 26,980.72 and 8,626

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Solution

The fourth proportional to 17,990.82, 26,980.72 and 8,626 is: 12,936.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,990.82 : 26,980.72 = 8,626 : x
  2. Step 2: Convert to fraction form
    17,990.82/26,980.72 = 8,626/x
  3. Step 3: Cross multiply
    17,990.82x = 26,980.72 × 8,626
  4. Step 4: Simplify right side
    17,990.82x = 232,735,690.72
  5. Step 5: Solve for x
    x = 232,735,690.72/17,990.82
  6. Step 6: Final answer
    x = 12,936.36

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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.