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Finding the Fourth Proportional to 17,680.79, 26,485.66 and 8,179.79

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Solution

The fourth proportional to 17,680.79, 26,485.66 and 8,179.79 is: 12,253.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,680.79 : 26,485.66 = 8,179.79 : x
  2. Step 2: Convert to fraction form
    17,680.79/26,485.66 = 8,179.79/x
  3. Step 3: Cross multiply
    17,680.79x = 26,485.66 × 8,179.79
  4. Step 4: Simplify right side
    17,680.79x = 216,647,136.81
  5. Step 5: Solve for x
    x = 216,647,136.81/17,680.79
  6. Step 6: Final answer
    x = 12,253.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.