Home / 13,419.70-18,517.26-7,451.44

Finding the Fourth Proportional to 13,419.70, 18,517.26 and 7,451.44

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Solution

The fourth proportional to 13,419.70, 18,517.26 and 7,451.44 is: 10,281.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.70 : 18,517.26 = 7,451.44 : x
  2. Step 2: Convert to fraction form
    13,419.70/18,517.26 = 7,451.44/x
  3. Step 3: Cross multiply
    13,419.70x = 18,517.26 × 7,451.44
  4. Step 4: Simplify right side
    13,419.70x = 137,980,251.85
  5. Step 5: Solve for x
    x = 137,980,251.85/13,419.70
  6. Step 6: Final answer
    x = 10,281.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.