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Finding the Fourth Proportional to 19,969.64, 29,914.14 and 18,336.68

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Solution

The fourth proportional to 19,969.64, 29,914.14 and 18,336.68 is: 27,468.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,969.64 : 29,914.14 = 18,336.68 : x
  2. Step 2: Convert to fraction form
    19,969.64/29,914.14 = 18,336.68/x
  3. Step 3: Cross multiply
    19,969.64x = 29,914.14 × 18,336.68
  4. Step 4: Simplify right side
    19,969.64x = 548,526,012.66
  5. Step 5: Solve for x
    x = 548,526,012.66/19,969.64
  6. Step 6: Final answer
    x = 27,468.00

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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.