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Finding the Fourth Proportional to 15,092.98, 20,829.62 and 8,379.90

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Solution

The fourth proportional to 15,092.98, 20,829.62 and 8,379.90 is: 11,564.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,092.98 : 20,829.62 = 8,379.90 : x
  2. Step 2: Convert to fraction form
    15,092.98/20,829.62 = 8,379.90/x
  3. Step 3: Cross multiply
    15,092.98x = 20,829.62 × 8,379.90
  4. Step 4: Simplify right side
    15,092.98x = 174,550,153.59
  5. Step 5: Solve for x
    x = 174,550,153.59/15,092.98
  6. Step 6: Final answer
    x = 11,564.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.