Home / 17,115.17-25,676.85-5,428.38

Finding the Fourth Proportional to 17,115.17, 25,676.85 and 5,428.38

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Solution

The fourth proportional to 17,115.17, 25,676.85 and 5,428.38 is: 8,143.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,115.17 : 25,676.85 = 5,428.38 : x
  2. Step 2: Convert to fraction form
    17,115.17/25,676.85 = 5,428.38/x
  3. Step 3: Cross multiply
    17,115.17x = 25,676.85 × 5,428.38
  4. Step 4: Simplify right side
    17,115.17x = 139,383,699.00
  5. Step 5: Solve for x
    x = 139,383,699.00/17,115.17
  6. Step 6: Final answer
    x = 8,143.87

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1.5x scale

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.