Home / 12,165.26-16,787.90-6,861.78

Finding the Fourth Proportional to 12,165.26, 16,787.90 and 6,861.78

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Solution

The fourth proportional to 12,165.26, 16,787.90 and 6,861.78 is: 9,469.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.26 : 16,787.90 = 6,861.78 : x
  2. Step 2: Convert to fraction form
    12,165.26/16,787.90 = 6,861.78/x
  3. Step 3: Cross multiply
    12,165.26x = 16,787.90 × 6,861.78
  4. Step 4: Simplify right side
    12,165.26x = 115,194,842.15
  5. Step 5: Solve for x
    x = 115,194,842.15/12,165.26
  6. Step 6: Final answer
    x = 9,469.17

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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.