Home / 20,635.02-31,003.17-13,242.54

Finding the Fourth Proportional to 20,635.02, 31,003.17 and 13,242.54

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Solution

The fourth proportional to 20,635.02, 31,003.17 and 13,242.54 is: 19,896.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.02 : 31,003.17 = 13,242.54 : x
  2. Step 2: Convert to fraction form
    20,635.02/31,003.17 = 13,242.54/x
  3. Step 3: Cross multiply
    20,635.02x = 31,003.17 × 13,242.54
  4. Step 4: Simplify right side
    20,635.02x = 410,560,718.85
  5. Step 5: Solve for x
    x = 410,560,718.85/20,635.02
  6. Step 6: Final answer
    x = 19,896.31

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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.