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Finding the Fourth Proportional to 12,750.50, 17,597.34 and 7,161.50

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Solution

The fourth proportional to 12,750.50, 17,597.34 and 7,161.50 is: 9,883.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.50 : 17,597.34 = 7,161.50 : x
  2. Step 2: Convert to fraction form
    12,750.50/17,597.34 = 7,161.50/x
  3. Step 3: Cross multiply
    12,750.50x = 17,597.34 × 7,161.50
  4. Step 4: Simplify right side
    12,750.50x = 126,023,350.41
  5. Step 5: Solve for x
    x = 126,023,350.41/12,750.50
  6. Step 6: Final answer
    x = 9,883.80

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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.