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Finding the Fourth Proportional to 12,808.19, 17,668.54 and 8,822.41

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Solution

The fourth proportional to 12,808.19, 17,668.54 and 8,822.41 is: 12,170.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.19 : 17,668.54 = 8,822.41 : x
  2. Step 2: Convert to fraction form
    12,808.19/17,668.54 = 8,822.41/x
  3. Step 3: Cross multiply
    12,808.19x = 17,668.54 × 8,822.41
  4. Step 4: Simplify right side
    12,808.19x = 155,879,103.98
  5. Step 5: Solve for x
    x = 155,879,103.98/12,808.19
  6. Step 6: Final answer
    x = 12,170.27

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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.