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Finding the Fourth Proportional to 11,688.76, 17,531.20 and 3,368.44

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Solution

The fourth proportional to 11,688.76, 17,531.20 and 3,368.44 is: 5,052.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.76 : 17,531.20 = 3,368.44 : x
  2. Step 2: Convert to fraction form
    11,688.76/17,531.20 = 3,368.44/x
  3. Step 3: Cross multiply
    11,688.76x = 17,531.20 × 3,368.44
  4. Step 4: Simplify right side
    11,688.76x = 59,052,795.33
  5. Step 5: Solve for x
    x = 59,052,795.33/11,688.76
  6. Step 6: Final answer
    x = 5,052.10

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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.