Home / 12,166.50-16,790.34-6,861.21

Finding the Fourth Proportional to 12,166.50, 16,790.34 and 6,861.21

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Solution

The fourth proportional to 12,166.50, 16,790.34 and 6,861.21 is: 9,468.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,166.50 : 16,790.34 = 6,861.21 : x
  2. Step 2: Convert to fraction form
    12,166.50/16,790.34 = 6,861.21/x
  3. Step 3: Cross multiply
    12,166.50x = 16,790.34 × 6,861.21
  4. Step 4: Simplify right side
    12,166.50x = 115,202,011.48
  5. Step 5: Solve for x
    x = 115,202,011.48/12,166.50
  6. Step 6: Final answer
    x = 9,468.79

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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.