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Finding the Fourth Proportional to 26,738.40, 40,107.60 and 21,813.60

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Solution

The fourth proportional to 26,738.40, 40,107.60 and 21,813.60 is: 32,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,738.40 : 40,107.60 = 21,813.60 : x
  2. Step 2: Convert to fraction form
    26,738.40/40,107.60 = 21,813.60/x
  3. Step 3: Cross multiply
    26,738.40x = 40,107.60 × 21,813.60
  4. Step 4: Simplify right side
    26,738.40x = 874,891,143.36
  5. Step 5: Solve for x
    x = 874,891,143.36/26,738.40
  6. Step 6: Final answer
    x = 32,720.40

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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.