Home / 13,427.93-20,137.10-5,105.74

Finding the Fourth Proportional to 13,427.93, 20,137.10 and 5,105.74

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Solution

The fourth proportional to 13,427.93, 20,137.10 and 5,105.74 is: 7,656.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.93 : 20,137.10 = 5,105.74 : x
  2. Step 2: Convert to fraction form
    13,427.93/20,137.10 = 5,105.74/x
  3. Step 3: Cross multiply
    13,427.93x = 20,137.10 × 5,105.74
  4. Step 4: Simplify right side
    13,427.93x = 102,814,796.95
  5. Step 5: Solve for x
    x = 102,814,796.95/13,427.93
  6. Step 6: Final answer
    x = 7,656.79

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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.