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Finding the Fourth Proportional to 12,486.97, 18,731.71 and 3,602.52

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Solution

The fourth proportional to 12,486.97, 18,731.71 and 3,602.52 is: 5,404.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.97 : 18,731.71 = 3,602.52 : x
  2. Step 2: Convert to fraction form
    12,486.97/18,731.71 = 3,602.52/x
  3. Step 3: Cross multiply
    12,486.97x = 18,731.71 × 3,602.52
  4. Step 4: Simplify right side
    12,486.97x = 67,481,364.41
  5. Step 5: Solve for x
    x = 67,481,364.41/12,486.97
  6. Step 6: Final answer
    x = 5,404.14

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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.