Home / 12,130.62-18,195.75-3,811.13

Finding the Fourth Proportional to 12,130.62, 18,195.75 and 3,811.13

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Solution

The fourth proportional to 12,130.62, 18,195.75 and 3,811.13 is: 5,716.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.62 : 18,195.75 = 3,811.13 : x
  2. Step 2: Convert to fraction form
    12,130.62/18,195.75 = 3,811.13/x
  3. Step 3: Cross multiply
    12,130.62x = 18,195.75 × 3,811.13
  4. Step 4: Simplify right side
    12,130.62x = 69,346,368.70
  5. Step 5: Solve for x
    x = 69,346,368.70/12,130.62
  6. Step 6: Final answer
    x = 5,716.64

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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.