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Finding the Fourth Proportional to 13,932, 20,897.91 and 6,531.21

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Solution

The fourth proportional to 13,932, 20,897.91 and 6,531.21 is: 9,796.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,932 : 20,897.91 = 6,531.21 : x
  2. Step 2: Convert to fraction form
    13,932/20,897.91 = 6,531.21/x
  3. Step 3: Cross multiply
    13,932x = 20,897.91 × 6,531.21
  4. Step 4: Simplify right side
    13,932x = 136,488,638.77
  5. Step 5: Solve for x
    x = 136,488,638.77/13,932
  6. Step 6: Final answer
    x = 9,796.77

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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.