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Finding the Fourth Proportional to 15,755.92, 21,744.70 and 11,770.11

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Solution

The fourth proportional to 15,755.92, 21,744.70 and 11,770.11 is: 16,243.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,755.92 : 21,744.70 = 11,770.11 : x
  2. Step 2: Convert to fraction form
    15,755.92/21,744.70 = 11,770.11/x
  3. Step 3: Cross multiply
    15,755.92x = 21,744.70 × 11,770.11
  4. Step 4: Simplify right side
    15,755.92x = 255,937,481.49
  5. Step 5: Solve for x
    x = 255,937,481.49/15,755.92
  6. Step 6: Final answer
    x = 16,243.90

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1.5x scale

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.