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Finding the Fourth Proportional to 17,943.44, 26,895.72 and 8,690

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Solution

The fourth proportional to 17,943.44, 26,895.72 and 8,690 is: 13,025.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,943.44 : 26,895.72 = 8,690 : x
  2. Step 2: Convert to fraction form
    17,943.44/26,895.72 = 8,690/x
  3. Step 3: Cross multiply
    17,943.44x = 26,895.72 × 8,690
  4. Step 4: Simplify right side
    17,943.44x = 233,723,806.80
  5. Step 5: Solve for x
    x = 233,723,806.80/17,943.44
  6. Step 6: Final answer
    x = 13,025.59

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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.