Home / 12,140.83-18,210.66-3,375.55

Finding the Fourth Proportional to 12,140.83, 18,210.66 and 3,375.55

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Solution

The fourth proportional to 12,140.83, 18,210.66 and 3,375.55 is: 5,063.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.83 : 18,210.66 = 3,375.55 : x
  2. Step 2: Convert to fraction form
    12,140.83/18,210.66 = 3,375.55/x
  3. Step 3: Cross multiply
    12,140.83x = 18,210.66 × 3,375.55
  4. Step 4: Simplify right side
    12,140.83x = 61,470,993.36
  5. Step 5: Solve for x
    x = 61,470,993.36/12,140.83
  6. Step 6: Final answer
    x = 5,063.16

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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.