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Finding the Fourth Proportional to 25,414.48, 35,041.48 and 21,871.60

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Solution

The fourth proportional to 25,414.48, 35,041.48 and 21,871.60 is: 30,156.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,414.48 : 35,041.48 = 21,871.60 : x
  2. Step 2: Convert to fraction form
    25,414.48/35,041.48 = 21,871.60/x
  3. Step 3: Cross multiply
    25,414.48x = 35,041.48 × 21,871.60
  4. Step 4: Simplify right side
    25,414.48x = 766,413,233.97
  5. Step 5: Solve for x
    x = 766,413,233.97/25,414.48
  6. Step 6: Final answer
    x = 30,156.56

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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.