Home / 39,222.43-54,129.44-21,996.39

Finding the Fourth Proportional to 39,222.43, 54,129.44 and 21,996.39

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Solution

The fourth proportional to 39,222.43, 54,129.44 and 21,996.39 is: 30,356.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,222.43 : 54,129.44 = 21,996.39 : x
  2. Step 2: Convert to fraction form
    39,222.43/54,129.44 = 21,996.39/x
  3. Step 3: Cross multiply
    39,222.43x = 54,129.44 × 21,996.39
  4. Step 4: Simplify right side
    39,222.43x = 1,190,652,012.12
  5. Step 5: Solve for x
    x = 1,190,652,012.12/39,222.43
  6. Step 6: Final answer
    x = 30,356.41

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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.