Home / 18,396.34-25,387.49-13,028.38

Finding the Fourth Proportional to 18,396.34, 25,387.49 and 13,028.38

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Solution

The fourth proportional to 18,396.34, 25,387.49 and 13,028.38 is: 17,979.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396.34 : 25,387.49 = 13,028.38 : x
  2. Step 2: Convert to fraction form
    18,396.34/25,387.49 = 13,028.38/x
  3. Step 3: Cross multiply
    18,396.34x = 25,387.49 × 13,028.38
  4. Step 4: Simplify right side
    18,396.34x = 330,757,674.89
  5. Step 5: Solve for x
    x = 330,757,674.89/18,396.34
  6. Step 6: Final answer
    x = 17,979.54

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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.