Home / 13,427.88-20,138.78-5,104.94

Finding the Fourth Proportional to 13,427.88, 20,138.78 and 5,104.94

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Solution

The fourth proportional to 13,427.88, 20,138.78 and 5,104.94 is: 7,656.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.88 : 20,138.78 = 5,104.94 : x
  2. Step 2: Convert to fraction form
    13,427.88/20,138.78 = 5,104.94/x
  3. Step 3: Cross multiply
    13,427.88x = 20,138.78 × 5,104.94
  4. Step 4: Simplify right side
    13,427.88x = 102,807,137.35
  5. Step 5: Solve for x
    x = 102,807,137.35/13,427.88
  6. Step 6: Final answer
    x = 7,656.24

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1.5x scale

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.