Home / 14,823.87-20,456.78-8,109.69

Finding the Fourth Proportional to 14,823.87, 20,456.78 and 8,109.69

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Solution

The fourth proportional to 14,823.87, 20,456.78 and 8,109.69 is: 11,191.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,823.87 : 20,456.78 = 8,109.69 : x
  2. Step 2: Convert to fraction form
    14,823.87/20,456.78 = 8,109.69/x
  3. Step 3: Cross multiply
    14,823.87x = 20,456.78 × 8,109.69
  4. Step 4: Simplify right side
    14,823.87x = 165,898,103.65
  5. Step 5: Solve for x
    x = 165,898,103.65/14,823.87
  6. Step 6: Final answer
    x = 11,191.28

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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.