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Finding the Fourth Proportional to 17,980.74, 26,949.90 and 8,108.46

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Solution

The fourth proportional to 17,980.74, 26,949.90 and 8,108.46 is: 12,153.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,980.74 : 26,949.90 = 8,108.46 : x
  2. Step 2: Convert to fraction form
    17,980.74/26,949.90 = 8,108.46/x
  3. Step 3: Cross multiply
    17,980.74x = 26,949.90 × 8,108.46
  4. Step 4: Simplify right side
    17,980.74x = 218,522,186.15
  5. Step 5: Solve for x
    x = 218,522,186.15/17,980.74
  6. Step 6: Final answer
    x = 12,153.13

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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.