Home / 11,323.20-16,984.80-7,761.81

Finding the Fourth Proportional to 11,323.20, 16,984.80 and 7,761.81

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Solution

The fourth proportional to 11,323.20, 16,984.80 and 7,761.81 is: 11,642.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,323.20 : 16,984.80 = 7,761.81 : x
  2. Step 2: Convert to fraction form
    11,323.20/16,984.80 = 7,761.81/x
  3. Step 3: Cross multiply
    11,323.20x = 16,984.80 × 7,761.81
  4. Step 4: Simplify right side
    11,323.20x = 131,832,790.49
  5. Step 5: Solve for x
    x = 131,832,790.49/11,323.20
  6. Step 6: Final answer
    x = 11,642.72

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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.