Home / 20,553.20-30,844.20-13,175.60

Finding the Fourth Proportional to 20,553.20, 30,844.20 and 13,175.60

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Solution

The fourth proportional to 20,553.20, 30,844.20 and 13,175.60 is: 19,772.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.20 : 30,844.20 = 13,175.60 : x
  2. Step 2: Convert to fraction form
    20,553.20/30,844.20 = 13,175.60/x
  3. Step 3: Cross multiply
    20,553.20x = 30,844.20 × 13,175.60
  4. Step 4: Simplify right side
    20,553.20x = 406,390,841.52
  5. Step 5: Solve for x
    x = 406,390,841.52/20,553.20
  6. Step 6: Final answer
    x = 19,772.63

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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.