Home / 12,225.13-18,338.67-3,906.32

Finding the Fourth Proportional to 12,225.13, 18,338.67 and 3,906.32

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Solution

The fourth proportional to 12,225.13, 18,338.67 and 3,906.32 is: 5,859.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.13 : 18,338.67 = 3,906.32 : x
  2. Step 2: Convert to fraction form
    12,225.13/18,338.67 = 3,906.32/x
  3. Step 3: Cross multiply
    12,225.13x = 18,338.67 × 3,906.32
  4. Step 4: Simplify right side
    12,225.13x = 71,636,621.70
  5. Step 5: Solve for x
    x = 71,636,621.70/12,225.13
  6. Step 6: Final answer
    x = 5,859.79

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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.