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Finding the Fourth Proportional to 11,940.13, 17,903.76 and 9,159.94

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Solution

The fourth proportional to 11,940.13, 17,903.76 and 9,159.94 is: 13,734.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,940.13 : 17,903.76 = 9,159.94 : x
  2. Step 2: Convert to fraction form
    11,940.13/17,903.76 = 9,159.94/x
  3. Step 3: Cross multiply
    11,940.13x = 17,903.76 × 9,159.94
  4. Step 4: Simplify right side
    11,940.13x = 163,997,367.37
  5. Step 5: Solve for x
    x = 163,997,367.37/11,940.13
  6. Step 6: Final answer
    x = 13,734.97

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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.