Home / 12,115.08-18,174.38-5,870

Finding the Fourth Proportional to 12,115.08, 18,174.38 and 5,870

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Solution

The fourth proportional to 12,115.08, 18,174.38 and 5,870 is: 8,805.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.08 : 18,174.38 = 5,870 : x
  2. Step 2: Convert to fraction form
    12,115.08/18,174.38 = 5,870/x
  3. Step 3: Cross multiply
    12,115.08x = 18,174.38 × 5,870
  4. Step 4: Simplify right side
    12,115.08x = 106,683,610.60
  5. Step 5: Solve for x
    x = 106,683,610.60/12,115.08
  6. Step 6: Final answer
    x = 8,805.85

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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.