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Finding the Fourth Proportional to 17,761.80, 26,664.30 and 8,992.20

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Solution

The fourth proportional to 17,761.80, 26,664.30 and 8,992.20 is: 13,499.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,761.80 : 26,664.30 = 8,992.20 : x
  2. Step 2: Convert to fraction form
    17,761.80/26,664.30 = 8,992.20/x
  3. Step 3: Cross multiply
    17,761.80x = 26,664.30 × 8,992.20
  4. Step 4: Simplify right side
    17,761.80x = 239,770,718.46
  5. Step 5: Solve for x
    x = 239,770,718.46/17,761.80
  6. Step 6: Final answer
    x = 13,499.24

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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.