Home / 13,410.96-20,120.76-5,617.68

Finding the Fourth Proportional to 13,410.96, 20,120.76 and 5,617.68

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Solution

The fourth proportional to 13,410.96, 20,120.76 and 5,617.68 is: 8,428.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.96 : 20,120.76 = 5,617.68 : x
  2. Step 2: Convert to fraction form
    13,410.96/20,120.76 = 5,617.68/x
  3. Step 3: Cross multiply
    13,410.96x = 20,120.76 × 5,617.68
  4. Step 4: Simplify right side
    13,410.96x = 113,031,991.04
  5. Step 5: Solve for x
    x = 113,031,991.04/13,410.96
  6. Step 6: Final answer
    x = 8,428.33

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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.