Home / 21,224.90-31,833.27-20,171.23

Finding the Fourth Proportional to 21,224.90, 31,833.27 and 20,171.23

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Solution

The fourth proportional to 21,224.90, 31,833.27 and 20,171.23 is: 30,252.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.90 : 31,833.27 = 20,171.23 : x
  2. Step 2: Convert to fraction form
    21,224.90/31,833.27 = 20,171.23/x
  3. Step 3: Cross multiply
    21,224.90x = 31,833.27 × 20,171.23
  4. Step 4: Simplify right side
    21,224.90x = 642,116,131.24
  5. Step 5: Solve for x
    x = 642,116,131.24/21,224.90
  6. Step 6: Final answer
    x = 30,252.96

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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.