Home / 39,823.12-54,956.52-21,919.96

Finding the Fourth Proportional to 39,823.12, 54,956.52 and 21,919.96

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Solution

The fourth proportional to 39,823.12, 54,956.52 and 21,919.96 is: 30,249.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,823.12 : 54,956.52 = 21,919.96 : x
  2. Step 2: Convert to fraction form
    39,823.12/54,956.52 = 21,919.96/x
  3. Step 3: Cross multiply
    39,823.12x = 54,956.52 × 21,919.96
  4. Step 4: Simplify right side
    39,823.12x = 1,204,644,720.14
  5. Step 5: Solve for x
    x = 1,204,644,720.14/39,823.12
  6. Step 6: Final answer
    x = 30,249.88

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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.