Home / 8,729.80-13,099.50-4,112.68

Finding the Fourth Proportional to 8,729.80, 13,099.50 and 4,112.68

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Solution

The fourth proportional to 8,729.80, 13,099.50 and 4,112.68 is: 6,171.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.80 : 13,099.50 = 4,112.68 : x
  2. Step 2: Convert to fraction form
    8,729.80/13,099.50 = 4,112.68/x
  3. Step 3: Cross multiply
    8,729.80x = 13,099.50 × 4,112.68
  4. Step 4: Simplify right side
    8,729.80x = 53,874,051.66
  5. Step 5: Solve for x
    x = 53,874,051.66/8,729.80
  6. Step 6: Final answer
    x = 6,171.28

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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.