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Finding the Fourth Proportional to 12,115.71, 16,717.89 and 6,737.71

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Solution

The fourth proportional to 12,115.71, 16,717.89 and 6,737.71 is: 9,297.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.71 : 16,717.89 = 6,737.71 : x
  2. Step 2: Convert to fraction form
    12,115.71/16,717.89 = 6,737.71/x
  3. Step 3: Cross multiply
    12,115.71x = 16,717.89 × 6,737.71
  4. Step 4: Simplify right side
    12,115.71x = 112,640,294.63
  5. Step 5: Solve for x
    x = 112,640,294.63/12,115.71
  6. Step 6: Final answer
    x = 9,297.04

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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.