Home / 18,233.50-27,351.60-7,139.20

Finding the Fourth Proportional to 18,233.50, 27,351.60 and 7,139.20

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Solution

The fourth proportional to 18,233.50, 27,351.60 and 7,139.20 is: 10,709.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,233.50 : 27,351.60 = 7,139.20 : x
  2. Step 2: Convert to fraction form
    18,233.50/27,351.60 = 7,139.20/x
  3. Step 3: Cross multiply
    18,233.50x = 27,351.60 × 7,139.20
  4. Step 4: Simplify right side
    18,233.50x = 195,268,542.72
  5. Step 5: Solve for x
    x = 195,268,542.72/18,233.50
  6. Step 6: Final answer
    x = 10,709.33

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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.