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Finding the Fourth Proportional to 18,550.80, 27,829.26 and 9,191.25

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Solution

The fourth proportional to 18,550.80, 27,829.26 and 9,191.25 is: 13,788.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,550.80 : 27,829.26 = 9,191.25 : x
  2. Step 2: Convert to fraction form
    18,550.80/27,829.26 = 9,191.25/x
  3. Step 3: Cross multiply
    18,550.80x = 27,829.26 × 9,191.25
  4. Step 4: Simplify right side
    18,550.80x = 255,785,685.98
  5. Step 5: Solve for x
    x = 255,785,685.98/18,550.80
  6. Step 6: Final answer
    x = 13,788.39

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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.