Home / 20,198.41-27,869.56-11,700.02

Finding the Fourth Proportional to 20,198.41, 27,869.56 and 11,700.02

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Solution

The fourth proportional to 20,198.41, 27,869.56 and 11,700.02 is: 16,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,198.41 : 27,869.56 = 11,700.02 : x
  2. Step 2: Convert to fraction form
    20,198.41/27,869.56 = 11,700.02/x
  3. Step 3: Cross multiply
    20,198.41x = 27,869.56 × 11,700.02
  4. Step 4: Simplify right side
    20,198.41x = 326,074,409.39
  5. Step 5: Solve for x
    x = 326,074,409.39/20,198.41
  6. Step 6: Final answer
    x = 16,143.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.