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Finding the Fourth Proportional to 21,591.44, 29,792.04 and 13,202

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Solution

The fourth proportional to 21,591.44, 29,792.04 and 13,202 is: 18,216.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,591.44 : 29,792.04 = 13,202 : x
  2. Step 2: Convert to fraction form
    21,591.44/29,792.04 = 13,202/x
  3. Step 3: Cross multiply
    21,591.44x = 29,792.04 × 13,202
  4. Step 4: Simplify right side
    21,591.44x = 393,314,512.08
  5. Step 5: Solve for x
    x = 393,314,512.08/21,591.44
  6. Step 6: Final answer
    x = 18,216.22

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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.