Home / 39,984.20-55,178.04-21,836.12

Finding the Fourth Proportional to 39,984.20, 55,178.04 and 21,836.12

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Solution

The fourth proportional to 39,984.20, 55,178.04 and 21,836.12 is: 30,133.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,984.20 : 55,178.04 = 21,836.12 : x
  2. Step 2: Convert to fraction form
    39,984.20/55,178.04 = 21,836.12/x
  3. Step 3: Cross multiply
    39,984.20x = 55,178.04 × 21,836.12
  4. Step 4: Simplify right side
    39,984.20x = 1,204,874,302.80
  5. Step 5: Solve for x
    x = 1,204,874,302.80/39,984.20
  6. Step 6: Final answer
    x = 30,133.76

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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.