Home / 20,799.36-31,192.20-10,404

Finding the Fourth Proportional to 20,799.36, 31,192.20 and 10,404

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Solution

The fourth proportional to 20,799.36, 31,192.20 and 10,404 is: 15,602.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.36 : 31,192.20 = 10,404 : x
  2. Step 2: Convert to fraction form
    20,799.36/31,192.20 = 10,404/x
  3. Step 3: Cross multiply
    20,799.36x = 31,192.20 × 10,404
  4. Step 4: Simplify right side
    20,799.36x = 324,523,648.80
  5. Step 5: Solve for x
    x = 324,523,648.80/20,799.36
  6. Step 6: Final answer
    x = 15,602.58

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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.