Home / 11,513.20-17,269.80-3,722.80

Finding the Fourth Proportional to 11,513.20, 17,269.80 and 3,722.80

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Solution

The fourth proportional to 11,513.20, 17,269.80 and 3,722.80 is: 5,584.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,513.20 : 17,269.80 = 3,722.80 : x
  2. Step 2: Convert to fraction form
    11,513.20/17,269.80 = 3,722.80/x
  3. Step 3: Cross multiply
    11,513.20x = 17,269.80 × 3,722.80
  4. Step 4: Simplify right side
    11,513.20x = 64,292,011.44
  5. Step 5: Solve for x
    x = 64,292,011.44/11,513.20
  6. Step 6: Final answer
    x = 5,584.20

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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.