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Finding the Fourth Proportional to 19,661, 29,496.36 and 5,810

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Solution

The fourth proportional to 19,661, 29,496.36 and 5,810 is: 8,716.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,661 : 29,496.36 = 5,810 : x
  2. Step 2: Convert to fraction form
    19,661/29,496.36 = 5,810/x
  3. Step 3: Cross multiply
    19,661x = 29,496.36 × 5,810
  4. Step 4: Simplify right side
    19,661x = 171,373,851.60
  5. Step 5: Solve for x
    x = 171,373,851.60/19,661
  6. Step 6: Final answer
    x = 8,716.44

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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.