Home / 10,643.36-15,974.89-5,382.08

Finding the Fourth Proportional to 10,643.36, 15,974.89 and 5,382.08

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Solution

The fourth proportional to 10,643.36, 15,974.89 and 5,382.08 is: 8,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,643.36 : 15,974.89 = 5,382.08 : x
  2. Step 2: Convert to fraction form
    10,643.36/15,974.89 = 5,382.08/x
  3. Step 3: Cross multiply
    10,643.36x = 15,974.89 × 5,382.08
  4. Step 4: Simplify right side
    10,643.36x = 85,978,135.97
  5. Step 5: Solve for x
    x = 85,978,135.97/10,643.36
  6. Step 6: Final answer
    x = 8,078.10

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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.