Home / 18,515.78-27,773.67-10,191.51

Finding the Fourth Proportional to 18,515.78, 27,773.67 and 10,191.51

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Solution

The fourth proportional to 18,515.78, 27,773.67 and 10,191.51 is: 15,287.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.78 : 27,773.67 = 10,191.51 : x
  2. Step 2: Convert to fraction form
    18,515.78/27,773.67 = 10,191.51/x
  3. Step 3: Cross multiply
    18,515.78x = 27,773.67 × 10,191.51
  4. Step 4: Simplify right side
    18,515.78x = 283,055,635.54
  5. Step 5: Solve for x
    x = 283,055,635.54/18,515.78
  6. Step 6: Final answer
    x = 15,287.27

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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.