Home / 13,610.88-20,380.80-11,408.64

Finding the Fourth Proportional to 13,610.88, 20,380.80 and 11,408.64

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Solution

The fourth proportional to 13,610.88, 20,380.80 and 11,408.64 is: 17,083.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.88 : 20,380.80 = 11,408.64 : x
  2. Step 2: Convert to fraction form
    13,610.88/20,380.80 = 11,408.64/x
  3. Step 3: Cross multiply
    13,610.88x = 20,380.80 × 11,408.64
  4. Step 4: Simplify right side
    13,610.88x = 232,517,210.11
  5. Step 5: Solve for x
    x = 232,517,210.11/13,610.88
  6. Step 6: Final answer
    x = 17,083.19

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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.