Home / 18,112.95-27,147.55-13,170.33

Finding the Fourth Proportional to 18,112.95, 27,147.55 and 13,170.33

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Solution

The fourth proportional to 18,112.95, 27,147.55 and 13,170.33 is: 19,739.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,112.95 : 27,147.55 = 13,170.33 : x
  2. Step 2: Convert to fraction form
    18,112.95/27,147.55 = 13,170.33/x
  3. Step 3: Cross multiply
    18,112.95x = 27,147.55 × 13,170.33
  4. Step 4: Simplify right side
    18,112.95x = 357,542,192.19
  5. Step 5: Solve for x
    x = 357,542,192.19/18,112.95
  6. Step 6: Final answer
    x = 19,739.59

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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.