Home / 11,728.08-16,184.15-6,421.88

Finding the Fourth Proportional to 11,728.08, 16,184.15 and 6,421.88

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Solution

The fourth proportional to 11,728.08, 16,184.15 and 6,421.88 is: 8,861.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.08 : 16,184.15 = 6,421.88 : x
  2. Step 2: Convert to fraction form
    11,728.08/16,184.15 = 6,421.88/x
  3. Step 3: Cross multiply
    11,728.08x = 16,184.15 × 6,421.88
  4. Step 4: Simplify right side
    11,728.08x = 103,932,604.34
  5. Step 5: Solve for x
    x = 103,932,604.34/11,728.08
  6. Step 6: Final answer
    x = 8,861.86

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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.