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Finding the Fourth Proportional to 11,904.30, 17,856.45 and 11,175.30

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Solution

The fourth proportional to 11,904.30, 17,856.45 and 11,175.30 is: 16,762.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,904.30 : 17,856.45 = 11,175.30 : x
  2. Step 2: Convert to fraction form
    11,904.30/17,856.45 = 11,175.30/x
  3. Step 3: Cross multiply
    11,904.30x = 17,856.45 × 11,175.30
  4. Step 4: Simplify right side
    11,904.30x = 199,551,185.69
  5. Step 5: Solve for x
    x = 199,551,185.69/11,904.30
  6. Step 6: Final answer
    x = 16,762.95

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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.