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Finding the Fourth Proportional to 11,871.67, 17,807.34 and 3,551.53

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Solution

The fourth proportional to 11,871.67, 17,807.34 and 3,551.53 is: 5,327.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,871.67 : 17,807.34 = 3,551.53 : x
  2. Step 2: Convert to fraction form
    11,871.67/17,807.34 = 3,551.53/x
  3. Step 3: Cross multiply
    11,871.67x = 17,807.34 × 3,551.53
  4. Step 4: Simplify right side
    11,871.67x = 63,243,302.23
  5. Step 5: Solve for x
    x = 63,243,302.23/11,871.67
  6. Step 6: Final answer
    x = 5,327.25

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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.