Home / 39,126.06-53,993.87-21,220.97

Finding the Fourth Proportional to 39,126.06, 53,993.87 and 21,220.97

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Solution

The fourth proportional to 39,126.06, 53,993.87 and 21,220.97 is: 29,284.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,126.06 : 53,993.87 = 21,220.97 : x
  2. Step 2: Convert to fraction form
    39,126.06/53,993.87 = 21,220.97/x
  3. Step 3: Cross multiply
    39,126.06x = 53,993.87 × 21,220.97
  4. Step 4: Simplify right side
    39,126.06x = 1,145,801,919.38
  5. Step 5: Solve for x
    x = 1,145,801,919.38/39,126.06
  6. Step 6: Final answer
    x = 29,284.88

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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.