Home / 21,217.97-31,822.85-20,164.26

Finding the Fourth Proportional to 21,217.97, 31,822.85 and 20,164.26

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Solution

The fourth proportional to 21,217.97, 31,822.85 and 20,164.26 is: 30,242.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.97 : 31,822.85 = 20,164.26 : x
  2. Step 2: Convert to fraction form
    21,217.97/31,822.85 = 20,164.26/x
  3. Step 3: Cross multiply
    21,217.97x = 31,822.85 × 20,164.26
  4. Step 4: Simplify right side
    21,217.97x = 641,684,120.52
  5. Step 5: Solve for x
    x = 641,684,120.52/21,217.97
  6. Step 6: Final answer
    x = 30,242.49

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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.