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Finding the Fourth Proportional to 12,251.68, 18,368.48 and 3,926.88

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Solution

The fourth proportional to 12,251.68, 18,368.48 and 3,926.88 is: 5,887.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,251.68 : 18,368.48 = 3,926.88 : x
  2. Step 2: Convert to fraction form
    12,251.68/18,368.48 = 3,926.88/x
  3. Step 3: Cross multiply
    12,251.68x = 18,368.48 × 3,926.88
  4. Step 4: Simplify right side
    12,251.68x = 72,130,816.74
  5. Step 5: Solve for x
    x = 72,130,816.74/12,251.68
  6. Step 6: Final answer
    x = 5,887.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.