Home / 22,115.98-30,520.14-13,163.44

Finding the Fourth Proportional to 22,115.98, 30,520.14 and 13,163.44

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Solution

The fourth proportional to 22,115.98, 30,520.14 and 13,163.44 is: 18,165.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,115.98 : 30,520.14 = 13,163.44 : x
  2. Step 2: Convert to fraction form
    22,115.98/30,520.14 = 13,163.44/x
  3. Step 3: Cross multiply
    22,115.98x = 30,520.14 × 13,163.44
  4. Step 4: Simplify right side
    22,115.98x = 401,750,031.68
  5. Step 5: Solve for x
    x = 401,750,031.68/22,115.98
  6. Step 6: Final answer
    x = 18,165.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.