Home / 39,808.11-54,936.52-21,904.43

Finding the Fourth Proportional to 39,808.11, 54,936.52 and 21,904.43

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Solution

The fourth proportional to 39,808.11, 54,936.52 and 21,904.43 is: 30,228.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,808.11 : 54,936.52 = 21,904.43 : x
  2. Step 2: Convert to fraction form
    39,808.11/54,936.52 = 21,904.43/x
  3. Step 3: Cross multiply
    39,808.11x = 54,936.52 × 21,904.43
  4. Step 4: Simplify right side
    39,808.11x = 1,203,353,047.26
  5. Step 5: Solve for x
    x = 1,203,353,047.26/39,808.11
  6. Step 6: Final answer
    x = 30,228.84

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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.