Home / 14,811.24-20,438.67-8,680.80

Finding the Fourth Proportional to 14,811.24, 20,438.67 and 8,680.80

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Solution

The fourth proportional to 14,811.24, 20,438.67 and 8,680.80 is: 11,979.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,811.24 : 20,438.67 = 8,680.80 : x
  2. Step 2: Convert to fraction form
    14,811.24/20,438.67 = 8,680.80/x
  3. Step 3: Cross multiply
    14,811.24x = 20,438.67 × 8,680.80
  4. Step 4: Simplify right side
    14,811.24x = 177,424,006.54
  5. Step 5: Solve for x
    x = 177,424,006.54/14,811.24
  6. Step 6: Final answer
    x = 11,979.01

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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.