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Finding the Fourth Proportional to 8,696.76, 13,020.30 and 8,145.02

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Solution

The fourth proportional to 8,696.76, 13,020.30 and 8,145.02 is: 12,194.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,696.76 : 13,020.30 = 8,145.02 : x
  2. Step 2: Convert to fraction form
    8,696.76/13,020.30 = 8,145.02/x
  3. Step 3: Cross multiply
    8,696.76x = 13,020.30 × 8,145.02
  4. Step 4: Simplify right side
    8,696.76x = 106,050,538.80
  5. Step 5: Solve for x
    x = 106,050,538.80/8,696.76
  6. Step 6: Final answer
    x = 12,194.26

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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.