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Finding the Fourth Proportional to 11,985.47, 17,954.47 and 5,651.67

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Solution

The fourth proportional to 11,985.47, 17,954.47 and 5,651.67 is: 8,466.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.47 : 17,954.47 = 5,651.67 : x
  2. Step 2: Convert to fraction form
    11,985.47/17,954.47 = 5,651.67/x
  3. Step 3: Cross multiply
    11,985.47x = 17,954.47 × 5,651.67
  4. Step 4: Simplify right side
    11,985.47x = 101,472,711.21
  5. Step 5: Solve for x
    x = 101,472,711.21/11,985.47
  6. Step 6: Final answer
    x = 8,466.31

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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.