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Finding the Fourth Proportional to 12,260, 18,395.40 and 4,052

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Solution

The fourth proportional to 12,260, 18,395.40 and 4,052 is: 6,079.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,260 : 18,395.40 = 4,052 : x
  2. Step 2: Convert to fraction form
    12,260/18,395.40 = 4,052/x
  3. Step 3: Cross multiply
    12,260x = 18,395.40 × 4,052
  4. Step 4: Simplify right side
    12,260x = 74,538,160.80
  5. Step 5: Solve for x
    x = 74,538,160.80/12,260
  6. Step 6: Final answer
    x = 6,079.78

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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.