Home / 31,297.06-43,166.39-21,736.96

Finding the Fourth Proportional to 31,297.06, 43,166.39 and 21,736.96

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Solution

The fourth proportional to 31,297.06, 43,166.39 and 21,736.96 is: 29,980.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,297.06 : 43,166.39 = 21,736.96 : x
  2. Step 2: Convert to fraction form
    31,297.06/43,166.39 = 21,736.96/x
  3. Step 3: Cross multiply
    31,297.06x = 43,166.39 × 21,736.96
  4. Step 4: Simplify right side
    31,297.06x = 938,305,997.58
  5. Step 5: Solve for x
    x = 938,305,997.58/31,297.06
  6. Step 6: Final answer
    x = 29,980.64

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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.