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Finding the Fourth Proportional to 12,179.75, 16,808.78 and 6,802.19

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Solution

The fourth proportional to 12,179.75, 16,808.78 and 6,802.19 is: 9,387.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.75 : 16,808.78 = 6,802.19 : x
  2. Step 2: Convert to fraction form
    12,179.75/16,808.78 = 6,802.19/x
  3. Step 3: Cross multiply
    12,179.75x = 16,808.78 × 6,802.19
  4. Step 4: Simplify right side
    12,179.75x = 114,336,397.17
  5. Step 5: Solve for x
    x = 114,336,397.17/12,179.75
  6. Step 6: Final answer
    x = 9,387.42

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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.