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Finding the Fourth Proportional to 18,212.20, 25,133.04 and 10,656.88

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Solution

The fourth proportional to 18,212.20, 25,133.04 and 10,656.88 is: 14,706.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,212.20 : 25,133.04 = 10,656.88 : x
  2. Step 2: Convert to fraction form
    18,212.20/25,133.04 = 10,656.88/x
  3. Step 3: Cross multiply
    18,212.20x = 25,133.04 × 10,656.88
  4. Step 4: Simplify right side
    18,212.20x = 267,839,791.32
  5. Step 5: Solve for x
    x = 267,839,791.32/18,212.20
  6. Step 6: Final answer
    x = 14,706.61

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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.