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Finding the Fourth Proportional to 8,585.33, 12,820.70 and 6,715.44

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Solution

The fourth proportional to 8,585.33, 12,820.70 and 6,715.44 is: 10,028.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,585.33 : 12,820.70 = 6,715.44 : x
  2. Step 2: Convert to fraction form
    8,585.33/12,820.70 = 6,715.44/x
  3. Step 3: Cross multiply
    8,585.33x = 12,820.70 × 6,715.44
  4. Step 4: Simplify right side
    8,585.33x = 86,096,608.03
  5. Step 5: Solve for x
    x = 86,096,608.03/8,585.33
  6. Step 6: Final answer
    x = 10,028.35

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.