Home / 13,419.76-20,120.46-6,833.20

Finding the Fourth Proportional to 13,419.76, 20,120.46 and 6,833.20

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Solution

The fourth proportional to 13,419.76, 20,120.46 and 6,833.20 is: 10,245.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.76 : 20,120.46 = 6,833.20 : x
  2. Step 2: Convert to fraction form
    13,419.76/20,120.46 = 6,833.20/x
  3. Step 3: Cross multiply
    13,419.76x = 20,120.46 × 6,833.20
  4. Step 4: Simplify right side
    13,419.76x = 137,487,127.27
  5. Step 5: Solve for x
    x = 137,487,127.27/13,419.76
  6. Step 6: Final answer
    x = 10,245.13

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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.