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Finding the Fourth Proportional to 17,989.67, 26,986.80 and 9,658.26

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Solution

The fourth proportional to 17,989.67, 26,986.80 and 9,658.26 is: 14,488.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,989.67 : 26,986.80 = 9,658.26 : x
  2. Step 2: Convert to fraction form
    17,989.67/26,986.80 = 9,658.26/x
  3. Step 3: Cross multiply
    17,989.67x = 26,986.80 × 9,658.26
  4. Step 4: Simplify right side
    17,989.67x = 260,645,530.97
  5. Step 5: Solve for x
    x = 260,645,530.97/17,989.67
  6. Step 6: Final answer
    x = 14,488.62

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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.