Home / 15,189.57-22,781.51-12,245.21

Finding the Fourth Proportional to 15,189.57, 22,781.51 and 12,245.21

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Solution

The fourth proportional to 15,189.57, 22,781.51 and 12,245.21 is: 18,365.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189.57 : 22,781.51 = 12,245.21 : x
  2. Step 2: Convert to fraction form
    15,189.57/22,781.51 = 12,245.21/x
  3. Step 3: Cross multiply
    15,189.57x = 22,781.51 × 12,245.21
  4. Step 4: Simplify right side
    15,189.57x = 278,964,198.93
  5. Step 5: Solve for x
    x = 278,964,198.93/15,189.57
  6. Step 6: Final answer
    x = 18,365.51

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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.