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Finding the Fourth Proportional to 17,999.50, 26,994.18 and 10,781.86

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Solution

The fourth proportional to 17,999.50, 26,994.18 and 10,781.86 is: 16,169.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,999.50 : 26,994.18 = 10,781.86 : x
  2. Step 2: Convert to fraction form
    17,999.50/26,994.18 = 10,781.86/x
  3. Step 3: Cross multiply
    17,999.50x = 26,994.18 × 10,781.86
  4. Step 4: Simplify right side
    17,999.50x = 291,047,469.57
  5. Step 5: Solve for x
    x = 291,047,469.57/17,999.50
  6. Step 6: Final answer
    x = 16,169.75

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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.