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Finding the Fourth Proportional to 17,989.82, 26,986.99 and 9,658.38

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Solution

The fourth proportional to 17,989.82, 26,986.99 and 9,658.38 is: 14,488.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,989.82 : 26,986.99 = 9,658.38 : x
  2. Step 2: Convert to fraction form
    17,989.82/26,986.99 = 9,658.38/x
  3. Step 3: Cross multiply
    17,989.82x = 26,986.99 × 9,658.38
  4. Step 4: Simplify right side
    17,989.82x = 260,650,604.48
  5. Step 5: Solve for x
    x = 260,650,604.48/17,989.82
  6. Step 6: Final answer
    x = 14,488.78

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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.