Home / 21,929.10-32,933.24-20,170.90

Finding the Fourth Proportional to 21,929.10, 32,933.24 and 20,170.90

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Solution

The fourth proportional to 21,929.10, 32,933.24 and 20,170.90 is: 30,292.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,929.10 : 32,933.24 = 20,170.90 : x
  2. Step 2: Convert to fraction form
    21,929.10/32,933.24 = 20,170.90/x
  3. Step 3: Cross multiply
    21,929.10x = 32,933.24 × 20,170.90
  4. Step 4: Simplify right side
    21,929.10x = 664,293,090.72
  5. Step 5: Solve for x
    x = 664,293,090.72/21,929.10
  6. Step 6: Final answer
    x = 30,292.77

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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.