Home / 13,625.78-20,438.64-3,765.05

Finding the Fourth Proportional to 13,625.78, 20,438.64 and 3,765.05

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Solution

The fourth proportional to 13,625.78, 20,438.64 and 3,765.05 is: 5,647.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,625.78 : 20,438.64 = 3,765.05 : x
  2. Step 2: Convert to fraction form
    13,625.78/20,438.64 = 3,765.05/x
  3. Step 3: Cross multiply
    13,625.78x = 20,438.64 × 3,765.05
  4. Step 4: Simplify right side
    13,625.78x = 76,952,399.34
  5. Step 5: Solve for x
    x = 76,952,399.34/13,625.78
  6. Step 6: Final answer
    x = 5,647.56

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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.