Home / 12,167.12-16,789.20-6,861.62

Finding the Fourth Proportional to 12,167.12, 16,789.20 and 6,861.62

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Solution

The fourth proportional to 12,167.12, 16,789.20 and 6,861.62 is: 9,468.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,167.12 : 16,789.20 = 6,861.62 : x
  2. Step 2: Convert to fraction form
    12,167.12/16,789.20 = 6,861.62/x
  3. Step 3: Cross multiply
    12,167.12x = 16,789.20 × 6,861.62
  4. Step 4: Simplify right side
    12,167.12x = 115,201,110.50
  5. Step 5: Solve for x
    x = 115,201,110.50/12,167.12
  6. Step 6: Final answer
    x = 9,468.23

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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.