Home / 12,121.38-18,182.07-3,356.10

Finding the Fourth Proportional to 12,121.38, 18,182.07 and 3,356.10

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Solution

The fourth proportional to 12,121.38, 18,182.07 and 3,356.10 is: 5,034.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.38 : 18,182.07 = 3,356.10 : x
  2. Step 2: Convert to fraction form
    12,121.38/18,182.07 = 3,356.10/x
  3. Step 3: Cross multiply
    12,121.38x = 18,182.07 × 3,356.10
  4. Step 4: Simplify right side
    12,121.38x = 61,020,845.13
  5. Step 5: Solve for x
    x = 61,020,845.13/12,121.38
  6. Step 6: Final answer
    x = 5,034.15

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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.