Home / 21,217.82-31,778.27-10,132.31

Finding the Fourth Proportional to 21,217.82, 31,778.27 and 10,132.31

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Solution

The fourth proportional to 21,217.82, 31,778.27 and 10,132.31 is: 15,175.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.82 : 31,778.27 = 10,132.31 : x
  2. Step 2: Convert to fraction form
    21,217.82/31,778.27 = 10,132.31/x
  3. Step 3: Cross multiply
    21,217.82x = 31,778.27 × 10,132.31
  4. Step 4: Simplify right side
    21,217.82x = 321,987,073.35
  5. Step 5: Solve for x
    x = 321,987,073.35/21,217.82
  6. Step 6: Final answer
    x = 15,175.32

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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.