Home / 22,321.12-33,321.56-20,765.92

Finding the Fourth Proportional to 22,321.12, 33,321.56 and 20,765.92

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Solution

The fourth proportional to 22,321.12, 33,321.56 and 20,765.92 is: 30,999.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,321.12 : 33,321.56 = 20,765.92 : x
  2. Step 2: Convert to fraction form
    22,321.12/33,321.56 = 20,765.92/x
  3. Step 3: Cross multiply
    22,321.12x = 33,321.56 × 20,765.92
  4. Step 4: Simplify right side
    22,321.12x = 691,952,849.24
  5. Step 5: Solve for x
    x = 691,952,849.24/22,321.12
  6. Step 6: Final answer
    x = 30,999.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.