Home / 17,420.75-26,135.45-5,108.75

Finding the Fourth Proportional to 17,420.75, 26,135.45 and 5,108.75

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Solution

The fourth proportional to 17,420.75, 26,135.45 and 5,108.75 is: 7,664.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,420.75 : 26,135.45 = 5,108.75 : x
  2. Step 2: Convert to fraction form
    17,420.75/26,135.45 = 5,108.75/x
  3. Step 3: Cross multiply
    17,420.75x = 26,135.45 × 5,108.75
  4. Step 4: Simplify right side
    17,420.75x = 133,519,480.19
  5. Step 5: Solve for x
    x = 133,519,480.19/17,420.75
  6. Step 6: Final answer
    x = 7,664.39

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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.