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Finding the Fourth Proportional to 17,404.90, 26,104 and 4,921.90

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Solution

The fourth proportional to 17,404.90, 26,104 and 4,921.90 is: 7,381.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,404.90 : 26,104 = 4,921.90 : x
  2. Step 2: Convert to fraction form
    17,404.90/26,104 = 4,921.90/x
  3. Step 3: Cross multiply
    17,404.90x = 26,104 × 4,921.90
  4. Step 4: Simplify right side
    17,404.90x = 128,481,277.60
  5. Step 5: Solve for x
    x = 128,481,277.60/17,404.90
  6. Step 6: Final answer
    x = 7,381.90

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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.