Home / 21,226.90-31,836.26-20,173.22

Finding the Fourth Proportional to 21,226.90, 31,836.26 and 20,173.22

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Solution

The fourth proportional to 21,226.90, 31,836.26 and 20,173.22 is: 30,255.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,226.90 : 31,836.26 = 20,173.22 : x
  2. Step 2: Convert to fraction form
    21,226.90/31,836.26 = 20,173.22/x
  3. Step 3: Cross multiply
    21,226.90x = 31,836.26 × 20,173.22
  4. Step 4: Simplify right side
    21,226.90x = 642,239,876.96
  5. Step 5: Solve for x
    x = 642,239,876.96/21,226.90
  6. Step 6: Final answer
    x = 30,255.94

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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.