Home / 17,115.30-25,670.37-5,427

Finding the Fourth Proportional to 17,115.30, 25,670.37 and 5,427

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Solution

The fourth proportional to 17,115.30, 25,670.37 and 5,427 is: 8,139.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,115.30 : 25,670.37 = 5,427 : x
  2. Step 2: Convert to fraction form
    17,115.30/25,670.37 = 5,427/x
  3. Step 3: Cross multiply
    17,115.30x = 25,670.37 × 5,427
  4. Step 4: Simplify right side
    17,115.30x = 139,313,097.99
  5. Step 5: Solve for x
    x = 139,313,097.99/17,115.30
  6. Step 6: Final answer
    x = 8,139.68

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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.