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Finding the Fourth Proportional to 13,662, 20,392.02 and 13,330.44

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Solution

The fourth proportional to 13,662, 20,392.02 and 13,330.44 is: 19,897.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662 : 20,392.02 = 13,330.44 : x
  2. Step 2: Convert to fraction form
    13,662/20,392.02 = 13,330.44/x
  3. Step 3: Cross multiply
    13,662x = 20,392.02 × 13,330.44
  4. Step 4: Simplify right side
    13,662x = 271,834,599.09
  5. Step 5: Solve for x
    x = 271,834,599.09/13,662
  6. Step 6: Final answer
    x = 19,897.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.