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Finding the Fourth Proportional to 26,894.80, 40,350.30 and 19,118.80

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Solution

The fourth proportional to 26,894.80, 40,350.30 and 19,118.80 is: 28,683.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,894.80 : 40,350.30 = 19,118.80 : x
  2. Step 2: Convert to fraction form
    26,894.80/40,350.30 = 19,118.80/x
  3. Step 3: Cross multiply
    26,894.80x = 40,350.30 × 19,118.80
  4. Step 4: Simplify right side
    26,894.80x = 771,449,315.64
  5. Step 5: Solve for x
    x = 771,449,315.64/26,894.80
  6. Step 6: Final answer
    x = 28,683.96

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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.