Home / 12,130.85-18,197.04-3,811.21

Finding the Fourth Proportional to 12,130.85, 18,197.04 and 3,811.21

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Solution

The fourth proportional to 12,130.85, 18,197.04 and 3,811.21 is: 5,717.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.85 : 18,197.04 = 3,811.21 : x
  2. Step 2: Convert to fraction form
    12,130.85/18,197.04 = 3,811.21/x
  3. Step 3: Cross multiply
    12,130.85x = 18,197.04 × 3,811.21
  4. Step 4: Simplify right side
    12,130.85x = 69,352,740.82
  5. Step 5: Solve for x
    x = 69,352,740.82/12,130.85
  6. Step 6: Final answer
    x = 5,717.06

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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.