Home / 18,287.64-27,431.37-6,438.60

Finding the Fourth Proportional to 18,287.64, 27,431.37 and 6,438.60

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Solution

The fourth proportional to 18,287.64, 27,431.37 and 6,438.60 is: 9,657.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.64 : 27,431.37 = 6,438.60 : x
  2. Step 2: Convert to fraction form
    18,287.64/27,431.37 = 6,438.60/x
  3. Step 3: Cross multiply
    18,287.64x = 27,431.37 × 6,438.60
  4. Step 4: Simplify right side
    18,287.64x = 176,619,618.88
  5. Step 5: Solve for x
    x = 176,619,618.88/18,287.64
  6. Step 6: Final answer
    x = 9,657.87

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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.