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Finding the Fourth Proportional to 12,672.86, 17,487.02 and 7,006.85

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Solution

The fourth proportional to 12,672.86, 17,487.02 and 7,006.85 is: 9,668.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.86 : 17,487.02 = 7,006.85 : x
  2. Step 2: Convert to fraction form
    12,672.86/17,487.02 = 7,006.85/x
  3. Step 3: Cross multiply
    12,672.86x = 17,487.02 × 7,006.85
  4. Step 4: Simplify right side
    12,672.86x = 122,528,838.65
  5. Step 5: Solve for x
    x = 122,528,838.65/12,672.86
  6. Step 6: Final answer
    x = 9,668.60

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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.