Home / 15,103.24-20,841.96-8,388.70

Finding the Fourth Proportional to 15,103.24, 20,841.96 and 8,388.70

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Solution

The fourth proportional to 15,103.24, 20,841.96 and 8,388.70 is: 11,576.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,103.24 : 20,841.96 = 8,388.70 : x
  2. Step 2: Convert to fraction form
    15,103.24/20,841.96 = 8,388.70/x
  3. Step 3: Cross multiply
    15,103.24x = 20,841.96 × 8,388.70
  4. Step 4: Simplify right side
    15,103.24x = 174,836,949.85
  5. Step 5: Solve for x
    x = 174,836,949.85/15,103.24
  6. Step 6: Final answer
    x = 11,576.12

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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.