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Finding the Fourth Proportional to 16,779.80, 25,176.90 and 8,571.80

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Solution

The fourth proportional to 16,779.80, 25,176.90 and 8,571.80 is: 12,861.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,779.80 : 25,176.90 = 8,571.80 : x
  2. Step 2: Convert to fraction form
    16,779.80/25,176.90 = 8,571.80/x
  3. Step 3: Cross multiply
    16,779.80x = 25,176.90 × 8,571.80
  4. Step 4: Simplify right side
    16,779.80x = 215,811,351.42
  5. Step 5: Solve for x
    x = 215,811,351.42/16,779.80
  6. Step 6: Final answer
    x = 12,861.38

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1.5x scale

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.