Home / 18,322.31-25,286.62-13,222.05

Finding the Fourth Proportional to 18,322.31, 25,286.62 and 13,222.05

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Solution

The fourth proportional to 18,322.31, 25,286.62 and 13,222.05 is: 18,247.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,322.31 : 25,286.62 = 13,222.05 : x
  2. Step 2: Convert to fraction form
    18,322.31/25,286.62 = 13,222.05/x
  3. Step 3: Cross multiply
    18,322.31x = 25,286.62 × 13,222.05
  4. Step 4: Simplify right side
    18,322.31x = 334,340,867.85
  5. Step 5: Solve for x
    x = 334,340,867.85/18,322.31
  6. Step 6: Final answer
    x = 18,247.74

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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.