Home / 21,785.93-30,065.19-12,226.41

Finding the Fourth Proportional to 21,785.93, 30,065.19 and 12,226.41

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Solution

The fourth proportional to 21,785.93, 30,065.19 and 12,226.41 is: 16,872.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.93 : 30,065.19 = 12,226.41 : x
  2. Step 2: Convert to fraction form
    21,785.93/30,065.19 = 12,226.41/x
  3. Step 3: Cross multiply
    21,785.93x = 30,065.19 × 12,226.41
  4. Step 4: Simplify right side
    21,785.93x = 367,589,141.43
  5. Step 5: Solve for x
    x = 367,589,141.43/21,785.93
  6. Step 6: Final answer
    x = 16,872.78

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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.