Home / 18,105.93-27,200.48-12,781.35

Finding the Fourth Proportional to 18,105.93, 27,200.48 and 12,781.35

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Solution

The fourth proportional to 18,105.93, 27,200.48 and 12,781.35 is: 19,201.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.93 : 27,200.48 = 12,781.35 : x
  2. Step 2: Convert to fraction form
    18,105.93/27,200.48 = 12,781.35/x
  3. Step 3: Cross multiply
    18,105.93x = 27,200.48 × 12,781.35
  4. Step 4: Simplify right side
    18,105.93x = 347,658,791.14
  5. Step 5: Solve for x
    x = 347,658,791.14/18,105.93
  6. Step 6: Final answer
    x = 19,201.38

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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.