Home / 21,226.90-31,836.27-20,173.23

Finding the Fourth Proportional to 21,226.90, 31,836.27 and 20,173.23

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Solution

The fourth proportional to 21,226.90, 31,836.27 and 20,173.23 is: 30,255.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,226.90 : 31,836.27 = 20,173.23 : x
  2. Step 2: Convert to fraction form
    21,226.90/31,836.27 = 20,173.23/x
  3. Step 3: Cross multiply
    21,226.90x = 31,836.27 × 20,173.23
  4. Step 4: Simplify right side
    21,226.90x = 642,240,397.05
  5. Step 5: Solve for x
    x = 642,240,397.05/21,226.90
  6. Step 6: Final answer
    x = 30,255.97

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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.