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Finding the Fourth Proportional to 17,420.97, 26,135.80 and 5,108.97

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Solution

The fourth proportional to 17,420.97, 26,135.80 and 5,108.97 is: 7,664.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,420.97 : 26,135.80 = 5,108.97 : x
  2. Step 2: Convert to fraction form
    17,420.97/26,135.80 = 5,108.97/x
  3. Step 3: Cross multiply
    17,420.97x = 26,135.80 × 5,108.97
  4. Step 4: Simplify right side
    17,420.97x = 133,527,018.13
  5. Step 5: Solve for x
    x = 133,527,018.13/17,420.97
  6. Step 6: Final answer
    x = 7,664.73

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1.5x scale

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.