Home / 21,192.03-31,791.39-6,399.10

Finding the Fourth Proportional to 21,192.03, 31,791.39 and 6,399.10

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Solution

The fourth proportional to 21,192.03, 31,791.39 and 6,399.10 is: 9,599.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.03 : 31,791.39 = 6,399.10 : x
  2. Step 2: Convert to fraction form
    21,192.03/31,791.39 = 6,399.10/x
  3. Step 3: Cross multiply
    21,192.03x = 31,791.39 × 6,399.10
  4. Step 4: Simplify right side
    21,192.03x = 203,436,299.49
  5. Step 5: Solve for x
    x = 203,436,299.49/21,192.03
  6. Step 6: Final answer
    x = 9,599.66

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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.