Home / 39,820.94-54,956.58-21,919.58

Finding the Fourth Proportional to 39,820.94, 54,956.58 and 21,919.58

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Solution

The fourth proportional to 39,820.94, 54,956.58 and 21,919.58 is: 30,251.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,820.94 : 54,956.58 = 21,919.58 : x
  2. Step 2: Convert to fraction form
    39,820.94/54,956.58 = 21,919.58/x
  3. Step 3: Cross multiply
    39,820.94x = 54,956.58 × 21,919.58
  4. Step 4: Simplify right side
    39,820.94x = 1,204,625,151.84
  5. Step 5: Solve for x
    x = 1,204,625,151.84/39,820.94
  6. Step 6: Final answer
    x = 30,251.05

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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.