Home / 31,392.97-43,317.38-20,072.48

Finding the Fourth Proportional to 31,392.97, 43,317.38 and 20,072.48

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Solution

The fourth proportional to 31,392.97, 43,317.38 and 20,072.48 is: 27,696.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,392.97 : 43,317.38 = 20,072.48 : x
  2. Step 2: Convert to fraction form
    31,392.97/43,317.38 = 20,072.48/x
  3. Step 3: Cross multiply
    31,392.97x = 43,317.38 × 20,072.48
  4. Step 4: Simplify right side
    31,392.97x = 869,487,077.30
  5. Step 5: Solve for x
    x = 869,487,077.30/31,392.97
  6. Step 6: Final answer
    x = 27,696.87

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Half scale
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Double scale
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Similar ratio
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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.