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Finding the Fourth Proportional to 12,613.84, 17,388.92 and 8,825.27

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Solution

The fourth proportional to 12,613.84, 17,388.92 and 8,825.27 is: 12,166.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.84 : 17,388.92 = 8,825.27 : x
  2. Step 2: Convert to fraction form
    12,613.84/17,388.92 = 8,825.27/x
  3. Step 3: Cross multiply
    12,613.84x = 17,388.92 × 8,825.27
  4. Step 4: Simplify right side
    12,613.84x = 153,461,826.41
  5. Step 5: Solve for x
    x = 153,461,826.41/12,613.84
  6. Step 6: Final answer
    x = 12,166.15

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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.