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Finding the Fourth Proportional to 26,806.40, 40,202.40 and 11,220.80

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Solution

The fourth proportional to 26,806.40, 40,202.40 and 11,220.80 is: 16,828.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,806.40 : 40,202.40 = 11,220.80 : x
  2. Step 2: Convert to fraction form
    26,806.40/40,202.40 = 11,220.80/x
  3. Step 3: Cross multiply
    26,806.40x = 40,202.40 × 11,220.80
  4. Step 4: Simplify right side
    26,806.40x = 451,103,089.92
  5. Step 5: Solve for x
    x = 451,103,089.92/26,806.40
  6. Step 6: Final answer
    x = 16,828.19

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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.