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Finding the Fourth Proportional to 17,989.16, 26,991.50 and 9,659.43

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Solution

The fourth proportional to 17,989.16, 26,991.50 and 9,659.43 is: 14,493.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,989.16 : 26,991.50 = 9,659.43 : x
  2. Step 2: Convert to fraction form
    17,989.16/26,991.50 = 9,659.43/x
  3. Step 3: Cross multiply
    17,989.16x = 26,991.50 × 9,659.43
  4. Step 4: Simplify right side
    17,989.16x = 260,722,456.55
  5. Step 5: Solve for x
    x = 260,722,456.55/17,989.16
  6. Step 6: Final answer
    x = 14,493.31

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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.