Home / 21,747.25-29,786.33-20,470.60

Finding the Fourth Proportional to 21,747.25, 29,786.33 and 20,470.60

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Solution

The fourth proportional to 21,747.25, 29,786.33 and 20,470.60 is: 28,037.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.25 : 29,786.33 = 20,470.60 : x
  2. Step 2: Convert to fraction form
    21,747.25/29,786.33 = 20,470.60/x
  3. Step 3: Cross multiply
    21,747.25x = 29,786.33 × 20,470.60
  4. Step 4: Simplify right side
    21,747.25x = 609,744,046.90
  5. Step 5: Solve for x
    x = 609,744,046.90/21,747.25
  6. Step 6: Final answer
    x = 28,037.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.