Home / 12,079.83-18,119.85-3,759.51

Finding the Fourth Proportional to 12,079.83, 18,119.85 and 3,759.51

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Solution

The fourth proportional to 12,079.83, 18,119.85 and 3,759.51 is: 5,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.83 : 18,119.85 = 3,759.51 : x
  2. Step 2: Convert to fraction form
    12,079.83/18,119.85 = 3,759.51/x
  3. Step 3: Cross multiply
    12,079.83x = 18,119.85 × 3,759.51
  4. Step 4: Simplify right side
    12,079.83x = 68,121,832.27
  5. Step 5: Solve for x
    x = 68,121,832.27/12,079.83
  6. Step 6: Final answer
    x = 5,639.30

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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.