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Finding the Fourth Proportional to 17,910.43, 26,865.62 and 4,762.81

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Solution

The fourth proportional to 17,910.43, 26,865.62 and 4,762.81 is: 7,144.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,910.43 : 26,865.62 = 4,762.81 : x
  2. Step 2: Convert to fraction form
    17,910.43/26,865.62 = 4,762.81/x
  3. Step 3: Cross multiply
    17,910.43x = 26,865.62 × 4,762.81
  4. Step 4: Simplify right side
    17,910.43x = 127,955,843.59
  5. Step 5: Solve for x
    x = 127,955,843.59/17,910.43
  6. Step 6: Final answer
    x = 7,144.21

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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.