Home / 12,081.76-18,120.54-3,197.18

Finding the Fourth Proportional to 12,081.76, 18,120.54 and 3,197.18

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Solution

The fourth proportional to 12,081.76, 18,120.54 and 3,197.18 is: 4,795.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,081.76 : 18,120.54 = 3,197.18 : x
  2. Step 2: Convert to fraction form
    12,081.76/18,120.54 = 3,197.18/x
  3. Step 3: Cross multiply
    12,081.76x = 18,120.54 × 3,197.18
  4. Step 4: Simplify right side
    12,081.76x = 57,934,628.08
  5. Step 5: Solve for x
    x = 57,934,628.08/12,081.76
  6. Step 6: Final answer
    x = 4,795.21

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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.