Home / 12,121.64-18,169.48-6,272.36

Finding the Fourth Proportional to 12,121.64, 18,169.48 and 6,272.36

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Solution

The fourth proportional to 12,121.64, 18,169.48 and 6,272.36 is: 9,401.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.64 : 18,169.48 = 6,272.36 : x
  2. Step 2: Convert to fraction form
    12,121.64/18,169.48 = 6,272.36/x
  3. Step 3: Cross multiply
    12,121.64x = 18,169.48 × 6,272.36
  4. Step 4: Simplify right side
    12,121.64x = 113,965,519.57
  5. Step 5: Solve for x
    x = 113,965,519.57/12,121.64
  6. Step 6: Final answer
    x = 9,401.82

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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.