Home / 12,165.82-16,787.81-6,861.94

Finding the Fourth Proportional to 12,165.82, 16,787.81 and 6,861.94

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Solution

The fourth proportional to 12,165.82, 16,787.81 and 6,861.94 is: 9,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.82 : 16,787.81 = 6,861.94 : x
  2. Step 2: Convert to fraction form
    12,165.82/16,787.81 = 6,861.94/x
  3. Step 3: Cross multiply
    12,165.82x = 16,787.81 × 6,861.94
  4. Step 4: Simplify right side
    12,165.82x = 115,196,920.14
  5. Step 5: Solve for x
    x = 115,196,920.14/12,165.82
  6. Step 6: Final answer
    x = 9,468.90

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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.