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Finding the Fourth Proportional to 12,668.46, 17,487.41 and 11,339.86

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Solution

The fourth proportional to 12,668.46, 17,487.41 and 11,339.86 is: 15,653.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.46 : 17,487.41 = 11,339.86 : x
  2. Step 2: Convert to fraction form
    12,668.46/17,487.41 = 11,339.86/x
  3. Step 3: Cross multiply
    12,668.46x = 17,487.41 × 11,339.86
  4. Step 4: Simplify right side
    12,668.46x = 198,304,637.03
  5. Step 5: Solve for x
    x = 198,304,637.03/12,668.46
  6. Step 6: Final answer
    x = 15,653.41

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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.