Home / 11,443.20-17,175.60-8,980.80

Finding the Fourth Proportional to 11,443.20, 17,175.60 and 8,980.80

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Solution

The fourth proportional to 11,443.20, 17,175.60 and 8,980.80 is: 13,479.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,443.20 : 17,175.60 = 8,980.80 : x
  2. Step 2: Convert to fraction form
    11,443.20/17,175.60 = 8,980.80/x
  3. Step 3: Cross multiply
    11,443.20x = 17,175.60 × 8,980.80
  4. Step 4: Simplify right side
    11,443.20x = 154,250,628.48
  5. Step 5: Solve for x
    x = 154,250,628.48/11,443.20
  6. Step 6: Final answer
    x = 13,479.68

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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.