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Finding the Fourth Proportional to 26,919.20, 40,364.40 and 11,319.20

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Solution

The fourth proportional to 26,919.20, 40,364.40 and 11,319.20 is: 16,972.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,919.20 : 40,364.40 = 11,319.20 : x
  2. Step 2: Convert to fraction form
    26,919.20/40,364.40 = 11,319.20/x
  3. Step 3: Cross multiply
    26,919.20x = 40,364.40 × 11,319.20
  4. Step 4: Simplify right side
    26,919.20x = 456,892,716.48
  5. Step 5: Solve for x
    x = 456,892,716.48/26,919.20
  6. Step 6: Final answer
    x = 16,972.74

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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.