Home / 31,233.74-43,115.38-21,175.96

Finding the Fourth Proportional to 31,233.74, 43,115.38 and 21,175.96

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Solution

The fourth proportional to 31,233.74, 43,115.38 and 21,175.96 is: 29,231.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,233.74 : 43,115.38 = 21,175.96 : x
  2. Step 2: Convert to fraction form
    31,233.74/43,115.38 = 21,175.96/x
  3. Step 3: Cross multiply
    31,233.74x = 43,115.38 × 21,175.96
  4. Step 4: Simplify right side
    31,233.74x = 913,009,562.26
  5. Step 5: Solve for x
    x = 913,009,562.26/31,233.74
  6. Step 6: Final answer
    x = 29,231.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.