Home / 12,605.32-18,906.15-3,720.22

Finding the Fourth Proportional to 12,605.32, 18,906.15 and 3,720.22

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Solution

The fourth proportional to 12,605.32, 18,906.15 and 3,720.22 is: 5,579.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.32 : 18,906.15 = 3,720.22 : x
  2. Step 2: Convert to fraction form
    12,605.32/18,906.15 = 3,720.22/x
  3. Step 3: Cross multiply
    12,605.32x = 18,906.15 × 3,720.22
  4. Step 4: Simplify right side
    12,605.32x = 70,334,990.09
  5. Step 5: Solve for x
    x = 70,334,990.09/12,605.32
  6. Step 6: Final answer
    x = 5,579.79

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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.