Home / 18,147.28-27,231.40-7,616.36

Finding the Fourth Proportional to 18,147.28, 27,231.40 and 7,616.36

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Solution

The fourth proportional to 18,147.28, 27,231.40 and 7,616.36 is: 11,428.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,147.28 : 27,231.40 = 7,616.36 : x
  2. Step 2: Convert to fraction form
    18,147.28/27,231.40 = 7,616.36/x
  3. Step 3: Cross multiply
    18,147.28x = 27,231.40 × 7,616.36
  4. Step 4: Simplify right side
    18,147.28x = 207,404,145.70
  5. Step 5: Solve for x
    x = 207,404,145.70/18,147.28
  6. Step 6: Final answer
    x = 11,428.94

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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.