Home / 9,876.20-13,629.16-5,399.96

Finding the Fourth Proportional to 9,876.20, 13,629.16 and 5,399.96

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Solution

The fourth proportional to 9,876.20, 13,629.16 and 5,399.96 is: 7,451.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,876.20 : 13,629.16 = 5,399.96 : x
  2. Step 2: Convert to fraction form
    9,876.20/13,629.16 = 5,399.96/x
  3. Step 3: Cross multiply
    9,876.20x = 13,629.16 × 5,399.96
  4. Step 4: Simplify right side
    9,876.20x = 73,596,837.19
  5. Step 5: Solve for x
    x = 73,596,837.19/9,876.20
  6. Step 6: Final answer
    x = 7,451.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.