Home / 21,871.08-32,768.82-17,220.78

Finding the Fourth Proportional to 21,871.08, 32,768.82 and 17,220.78

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Solution

The fourth proportional to 21,871.08, 32,768.82 and 17,220.78 is: 25,801.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,871.08 : 32,768.82 = 17,220.78 : x
  2. Step 2: Convert to fraction form
    21,871.08/32,768.82 = 17,220.78/x
  3. Step 3: Cross multiply
    21,871.08x = 32,768.82 × 17,220.78
  4. Step 4: Simplify right side
    21,871.08x = 564,304,640.08
  5. Step 5: Solve for x
    x = 564,304,640.08/21,871.08
  6. Step 6: Final answer
    x = 25,801.41

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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.