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Finding the Fourth Proportional to 12,079.69, 16,664.29 and 8,544.85

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Solution

The fourth proportional to 12,079.69, 16,664.29 and 8,544.85 is: 11,787.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.69 : 16,664.29 = 8,544.85 : x
  2. Step 2: Convert to fraction form
    12,079.69/16,664.29 = 8,544.85/x
  3. Step 3: Cross multiply
    12,079.69x = 16,664.29 × 8,544.85
  4. Step 4: Simplify right side
    12,079.69x = 142,393,858.41
  5. Step 5: Solve for x
    x = 142,393,858.41/12,079.69
  6. Step 6: Final answer
    x = 11,787.87

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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.