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Finding the Fourth Proportional to 26,719.20, 40,093.20 and 11,138.40

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Solution

The fourth proportional to 26,719.20, 40,093.20 and 11,138.40 is: 16,713.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,719.20 : 40,093.20 = 11,138.40 : x
  2. Step 2: Convert to fraction form
    26,719.20/40,093.20 = 11,138.40/x
  3. Step 3: Cross multiply
    26,719.20x = 40,093.20 × 11,138.40
  4. Step 4: Simplify right side
    26,719.20x = 446,574,098.88
  5. Step 5: Solve for x
    x = 446,574,098.88/26,719.20
  6. Step 6: Final answer
    x = 16,713.60

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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.