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Finding the Fourth Proportional to 17,989.56, 26,986.62 and 9,658.14

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Solution

The fourth proportional to 17,989.56, 26,986.62 and 9,658.14 is: 14,488.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,989.56 : 26,986.62 = 9,658.14 : x
  2. Step 2: Convert to fraction form
    17,989.56/26,986.62 = 9,658.14/x
  3. Step 3: Cross multiply
    17,989.56x = 26,986.62 × 9,658.14
  4. Step 4: Simplify right side
    17,989.56x = 260,640,554.09
  5. Step 5: Solve for x
    x = 260,640,554.09/17,989.56
  6. Step 6: Final answer
    x = 14,488.43

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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.