Home / 11,947.50-16,479.91-7,704

Finding the Fourth Proportional to 11,947.50, 16,479.91 and 7,704

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Solution

The fourth proportional to 11,947.50, 16,479.91 and 7,704 is: 10,626.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,947.50 : 16,479.91 = 7,704 : x
  2. Step 2: Convert to fraction form
    11,947.50/16,479.91 = 7,704/x
  3. Step 3: Cross multiply
    11,947.50x = 16,479.91 × 7,704
  4. Step 4: Simplify right side
    11,947.50x = 126,961,226.64
  5. Step 5: Solve for x
    x = 126,961,226.64/11,947.50
  6. Step 6: Final answer
    x = 10,626.59

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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.