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Finding the Fourth Proportional to 13,361.66, 20,036.70 and 6,343.70

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Solution

The fourth proportional to 13,361.66, 20,036.70 and 6,343.70 is: 9,512.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.66 : 20,036.70 = 6,343.70 : x
  2. Step 2: Convert to fraction form
    13,361.66/20,036.70 = 6,343.70/x
  3. Step 3: Cross multiply
    13,361.66x = 20,036.70 × 6,343.70
  4. Step 4: Simplify right side
    13,361.66x = 127,106,813.79
  5. Step 5: Solve for x
    x = 127,106,813.79/13,361.66
  6. Step 6: Final answer
    x = 9,512.80

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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.