Home / 18,611.50-27,919.02-6,131.56

Finding the Fourth Proportional to 18,611.50, 27,919.02 and 6,131.56

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Solution

The fourth proportional to 18,611.50, 27,919.02 and 6,131.56 is: 9,197.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.50 : 27,919.02 = 6,131.56 : x
  2. Step 2: Convert to fraction form
    18,611.50/27,919.02 = 6,131.56/x
  3. Step 3: Cross multiply
    18,611.50x = 27,919.02 × 6,131.56
  4. Step 4: Simplify right side
    18,611.50x = 171,187,115.61
  5. Step 5: Solve for x
    x = 171,187,115.61/18,611.50
  6. Step 6: Final answer
    x = 9,197.92

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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.