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Finding the Fourth Proportional to 11,903.75, 17,859.11 and 5,328.47

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Solution

The fourth proportional to 11,903.75, 17,859.11 and 5,328.47 is: 7,994.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,903.75 : 17,859.11 = 5,328.47 : x
  2. Step 2: Convert to fraction form
    11,903.75/17,859.11 = 5,328.47/x
  3. Step 3: Cross multiply
    11,903.75x = 17,859.11 × 5,328.47
  4. Step 4: Simplify right side
    11,903.75x = 95,161,615.92
  5. Step 5: Solve for x
    x = 95,161,615.92/11,903.75
  6. Step 6: Final answer
    x = 7,994.26

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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.