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Finding the Fourth Proportional to 12,261.80, 18,395.44 and 4,470.61

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Solution

The fourth proportional to 12,261.80, 18,395.44 and 4,470.61 is: 6,706.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.80 : 18,395.44 = 4,470.61 : x
  2. Step 2: Convert to fraction form
    12,261.80/18,395.44 = 4,470.61/x
  3. Step 3: Cross multiply
    12,261.80x = 18,395.44 × 4,470.61
  4. Step 4: Simplify right side
    12,261.80x = 82,238,815.34
  5. Step 5: Solve for x
    x = 82,238,815.34/12,261.80
  6. Step 6: Final answer
    x = 6,706.91

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