Home / 21,575.52-32,321.82-13,231.21

Finding the Fourth Proportional to 21,575.52, 32,321.82 and 13,231.21

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Solution

The fourth proportional to 21,575.52, 32,321.82 and 13,231.21 is: 19,821.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,575.52 : 32,321.82 = 13,231.21 : x
  2. Step 2: Convert to fraction form
    21,575.52/32,321.82 = 13,231.21/x
  3. Step 3: Cross multiply
    21,575.52x = 32,321.82 × 13,231.21
  4. Step 4: Simplify right side
    21,575.52x = 427,656,560.24
  5. Step 5: Solve for x
    x = 427,656,560.24/21,575.52
  6. Step 6: Final answer
    x = 19,821.38

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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.