Home / 12,130.75-18,196.13-3,922.75

Finding the Fourth Proportional to 12,130.75, 18,196.13 and 3,922.75

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Solution

The fourth proportional to 12,130.75, 18,196.13 and 3,922.75 is: 5,884.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.75 : 18,196.13 = 3,922.75 : x
  2. Step 2: Convert to fraction form
    12,130.75/18,196.13 = 3,922.75/x
  3. Step 3: Cross multiply
    12,130.75x = 18,196.13 × 3,922.75
  4. Step 4: Simplify right side
    12,130.75x = 71,378,868.96
  5. Step 5: Solve for x
    x = 71,378,868.96/12,130.75
  6. Step 6: Final answer
    x = 5,884.13

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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.