Home / 13,414.74-20,129.40-5,629.02

Finding the Fourth Proportional to 13,414.74, 20,129.40 and 5,629.02

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Solution

The fourth proportional to 13,414.74, 20,129.40 and 5,629.02 is: 8,446.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,414.74 : 20,129.40 = 5,629.02 : x
  2. Step 2: Convert to fraction form
    13,414.74/20,129.40 = 5,629.02/x
  3. Step 3: Cross multiply
    13,414.74x = 20,129.40 × 5,629.02
  4. Step 4: Simplify right side
    13,414.74x = 113,308,795.19
  5. Step 5: Solve for x
    x = 113,308,795.19/13,414.74
  6. Step 6: Final answer
    x = 8,446.59

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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.