Home / 39,807.81-54,936.06-21,904.77

Finding the Fourth Proportional to 39,807.81, 54,936.06 and 21,904.77

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Solution

The fourth proportional to 39,807.81, 54,936.06 and 21,904.77 is: 30,229.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,807.81 : 54,936.06 = 21,904.77 : x
  2. Step 2: Convert to fraction form
    39,807.81/54,936.06 = 21,904.77/x
  3. Step 3: Cross multiply
    39,807.81x = 54,936.06 × 21,904.77
  4. Step 4: Simplify right side
    39,807.81x = 1,203,361,759.01
  5. Step 5: Solve for x
    x = 1,203,361,759.01/39,807.81
  6. Step 6: Final answer
    x = 30,229.29

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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.