Home / 9,921.54-14,879.79-3,678.11

Finding the Fourth Proportional to 9,921.54, 14,879.79 and 3,678.11

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Solution

The fourth proportional to 9,921.54, 14,879.79 and 3,678.11 is: 5,516.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.54 : 14,879.79 = 3,678.11 : x
  2. Step 2: Convert to fraction form
    9,921.54/14,879.79 = 3,678.11/x
  3. Step 3: Cross multiply
    9,921.54x = 14,879.79 × 3,678.11
  4. Step 4: Simplify right side
    9,921.54x = 54,729,504.40
  5. Step 5: Solve for x
    x = 54,729,504.40/9,921.54
  6. Step 6: Final answer
    x = 5,516.23

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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.