Home / 12,121.18-18,182.19-3,356.75

Finding the Fourth Proportional to 12,121.18, 18,182.19 and 3,356.75

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Solution

The fourth proportional to 12,121.18, 18,182.19 and 3,356.75 is: 5,035.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.18 : 18,182.19 = 3,356.75 : x
  2. Step 2: Convert to fraction form
    12,121.18/18,182.19 = 3,356.75/x
  3. Step 3: Cross multiply
    12,121.18x = 18,182.19 × 3,356.75
  4. Step 4: Simplify right side
    12,121.18x = 61,033,066.28
  5. Step 5: Solve for x
    x = 61,033,066.28/12,121.18
  6. Step 6: Final answer
    x = 5,035.24

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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.