Home / 13,138.92-19,708.38-6,558.48

Finding the Fourth Proportional to 13,138.92, 19,708.38 and 6,558.48

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Solution

The fourth proportional to 13,138.92, 19,708.38 and 6,558.48 is: 9,837.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.92 : 19,708.38 = 6,558.48 : x
  2. Step 2: Convert to fraction form
    13,138.92/19,708.38 = 6,558.48/x
  3. Step 3: Cross multiply
    13,138.92x = 19,708.38 × 6,558.48
  4. Step 4: Simplify right side
    13,138.92x = 129,257,016.06
  5. Step 5: Solve for x
    x = 129,257,016.06/13,138.92
  6. Step 6: Final answer
    x = 9,837.72

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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.