Home / 18,351.28-25,338.99-11,979.82

Finding the Fourth Proportional to 18,351.28, 25,338.99 and 11,979.82

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Solution

The fourth proportional to 18,351.28, 25,338.99 and 11,979.82 is: 16,541.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351.28 : 25,338.99 = 11,979.82 : x
  2. Step 2: Convert to fraction form
    18,351.28/25,338.99 = 11,979.82/x
  3. Step 3: Cross multiply
    18,351.28x = 25,338.99 × 11,979.82
  4. Step 4: Simplify right side
    18,351.28x = 303,556,539.18
  5. Step 5: Solve for x
    x = 303,556,539.18/18,351.28
  6. Step 6: Final answer
    x = 16,541.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.