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Finding the Fourth Proportional to 17,690.49, 26,513.87 and 8,927.91

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Solution

The fourth proportional to 17,690.49, 26,513.87 and 8,927.91 is: 13,380.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,690.49 : 26,513.87 = 8,927.91 : x
  2. Step 2: Convert to fraction form
    17,690.49/26,513.87 = 8,927.91/x
  3. Step 3: Cross multiply
    17,690.49x = 26,513.87 × 8,927.91
  4. Step 4: Simplify right side
    17,690.49x = 236,713,400.47
  5. Step 5: Solve for x
    x = 236,713,400.47/17,690.49
  6. Step 6: Final answer
    x = 13,380.83

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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.