Home / 13,419.20-20,091.36-8,727.48

Finding the Fourth Proportional to 13,419.20, 20,091.36 and 8,727.48

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Solution

The fourth proportional to 13,419.20, 20,091.36 and 8,727.48 is: 13,066.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.20 : 20,091.36 = 8,727.48 : x
  2. Step 2: Convert to fraction form
    13,419.20/20,091.36 = 8,727.48/x
  3. Step 3: Cross multiply
    13,419.20x = 20,091.36 × 8,727.48
  4. Step 4: Simplify right side
    13,419.20x = 175,346,942.57
  5. Step 5: Solve for x
    x = 175,346,942.57/13,419.20
  6. Step 6: Final answer
    x = 13,066.87

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1.5x scale

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.