Home / 39,984.88-55,178.72-22,080.64

Finding the Fourth Proportional to 39,984.88, 55,178.72 and 22,080.64

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Solution

The fourth proportional to 39,984.88, 55,178.72 and 22,080.64 is: 30,471.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,984.88 : 55,178.72 = 22,080.64 : x
  2. Step 2: Convert to fraction form
    39,984.88/55,178.72 = 22,080.64/x
  3. Step 3: Cross multiply
    39,984.88x = 55,178.72 × 22,080.64
  4. Step 4: Simplify right side
    39,984.88x = 1,218,381,451.98
  5. Step 5: Solve for x
    x = 1,218,381,451.98/39,984.88
  6. Step 6: Final answer
    x = 30,471.05

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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.