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Finding the Fourth Proportional to 17,139.64, 25,651 and 14,369.44

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Solution

The fourth proportional to 17,139.64, 25,651 and 14,369.44 is: 21,505.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,139.64 : 25,651 = 14,369.44 : x
  2. Step 2: Convert to fraction form
    17,139.64/25,651 = 14,369.44/x
  3. Step 3: Cross multiply
    17,139.64x = 25,651 × 14,369.44
  4. Step 4: Simplify right side
    17,139.64x = 368,590,505.44
  5. Step 5: Solve for x
    x = 368,590,505.44/17,139.64
  6. Step 6: Final answer
    x = 21,505.15

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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.