Home / 14,584.91-20,120.86-8,919.90

Finding the Fourth Proportional to 14,584.91, 20,120.86 and 8,919.90

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Solution

The fourth proportional to 14,584.91, 20,120.86 and 8,919.90 is: 12,305.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,584.91 : 20,120.86 = 8,919.90 : x
  2. Step 2: Convert to fraction form
    14,584.91/20,120.86 = 8,919.90/x
  3. Step 3: Cross multiply
    14,584.91x = 20,120.86 × 8,919.90
  4. Step 4: Simplify right side
    14,584.91x = 179,476,095.35
  5. Step 5: Solve for x
    x = 179,476,095.35/14,584.91
  6. Step 6: Final answer
    x = 12,305.60

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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.