Home / 39,917-55,079.44-22,921.98

Finding the Fourth Proportional to 39,917, 55,079.44 and 22,921.98

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Solution

The fourth proportional to 39,917, 55,079.44 and 22,921.98 is: 31,628.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,917 : 55,079.44 = 22,921.98 : x
  2. Step 2: Convert to fraction form
    39,917/55,079.44 = 22,921.98/x
  3. Step 3: Cross multiply
    39,917x = 55,079.44 × 22,921.98
  4. Step 4: Simplify right side
    39,917x = 1,262,529,822.09
  5. Step 5: Solve for x
    x = 1,262,529,822.09/39,917
  6. Step 6: Final answer
    x = 31,628.88

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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.