Home / 18,537.05-27,808.36-5,387.72

Finding the Fourth Proportional to 18,537.05, 27,808.36 and 5,387.72

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Solution

The fourth proportional to 18,537.05, 27,808.36 and 5,387.72 is: 8,082.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,537.05 : 27,808.36 = 5,387.72 : x
  2. Step 2: Convert to fraction form
    18,537.05/27,808.36 = 5,387.72/x
  3. Step 3: Cross multiply
    18,537.05x = 27,808.36 × 5,387.72
  4. Step 4: Simplify right side
    18,537.05x = 149,823,535.13
  5. Step 5: Solve for x
    x = 149,823,535.13/18,537.05
  6. Step 6: Final answer
    x = 8,082.38

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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.