Home / 10,747.20-16,116.96-3,820.32

Finding the Fourth Proportional to 10,747.20, 16,116.96 and 3,820.32

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Solution

The fourth proportional to 10,747.20, 16,116.96 and 3,820.32 is: 5,729.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,747.20 : 16,116.96 = 3,820.32 : x
  2. Step 2: Convert to fraction form
    10,747.20/16,116.96 = 3,820.32/x
  3. Step 3: Cross multiply
    10,747.20x = 16,116.96 × 3,820.32
  4. Step 4: Simplify right side
    10,747.20x = 61,571,944.63
  5. Step 5: Solve for x
    x = 61,571,944.63/10,747.20
  6. Step 6: Final answer
    x = 5,729.11

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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.