Home / 39,656.75-54,728.31-21,753.41

Finding the Fourth Proportional to 39,656.75, 54,728.31 and 21,753.41

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Solution

The fourth proportional to 39,656.75, 54,728.31 and 21,753.41 is: 30,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,656.75 : 54,728.31 = 21,753.41 : x
  2. Step 2: Convert to fraction form
    39,656.75/54,728.31 = 21,753.41/x
  3. Step 3: Cross multiply
    39,656.75x = 54,728.31 × 21,753.41
  4. Step 4: Simplify right side
    39,656.75x = 1,190,527,092.40
  5. Step 5: Solve for x
    x = 1,190,527,092.40/39,656.75
  6. Step 6: Final answer
    x = 30,020.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.