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Finding the Fourth Proportional to 13,092.98, 19,600.88 and 8,642.43

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Solution

The fourth proportional to 13,092.98, 19,600.88 and 8,642.43 is: 12,938.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,092.98 : 19,600.88 = 8,642.43 : x
  2. Step 2: Convert to fraction form
    13,092.98/19,600.88 = 8,642.43/x
  3. Step 3: Cross multiply
    13,092.98x = 19,600.88 × 8,642.43
  4. Step 4: Simplify right side
    13,092.98x = 169,399,190.13
  5. Step 5: Solve for x
    x = 169,399,190.13/13,092.98
  6. Step 6: Final answer
    x = 12,938.17

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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.