Home / 21,227.85-31,793.22-10,142.33

Finding the Fourth Proportional to 21,227.85, 31,793.22 and 10,142.33

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Solution

The fourth proportional to 21,227.85, 31,793.22 and 10,142.33 is: 15,190.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,227.85 : 31,793.22 = 10,142.33 : x
  2. Step 2: Convert to fraction form
    21,227.85/31,793.22 = 10,142.33/x
  3. Step 3: Cross multiply
    21,227.85x = 31,793.22 × 10,142.33
  4. Step 4: Simplify right side
    21,227.85x = 322,457,170.04
  5. Step 5: Solve for x
    x = 322,457,170.04/21,227.85
  6. Step 6: Final answer
    x = 15,190.29

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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.