Home / 13,731.92-20,595.12-8,786.60

Finding the Fourth Proportional to 13,731.92, 20,595.12 and 8,786.60

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Solution

The fourth proportional to 13,731.92, 20,595.12 and 8,786.60 is: 13,178.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.92 : 20,595.12 = 8,786.60 : x
  2. Step 2: Convert to fraction form
    13,731.92/20,595.12 = 8,786.60/x
  3. Step 3: Cross multiply
    13,731.92x = 20,595.12 × 8,786.60
  4. Step 4: Simplify right side
    13,731.92x = 180,961,081.39
  5. Step 5: Solve for x
    x = 180,961,081.39/13,731.92
  6. Step 6: Final answer
    x = 13,178.13

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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.