Home / 18,338.24-25,288.16-15,694.40

Finding the Fourth Proportional to 18,338.24, 25,288.16 and 15,694.40

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Solution

The fourth proportional to 18,338.24, 25,288.16 and 15,694.40 is: 21,642.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338.24 : 25,288.16 = 15,694.40 : x
  2. Step 2: Convert to fraction form
    18,338.24/25,288.16 = 15,694.40/x
  3. Step 3: Cross multiply
    18,338.24x = 25,288.16 × 15,694.40
  4. Step 4: Simplify right side
    18,338.24x = 396,882,498.30
  5. Step 5: Solve for x
    x = 396,882,498.30/18,338.24
  6. Step 6: Final answer
    x = 21,642.34

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Similar ratio
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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.