Home / 12,268.61-18,399.26-4,478.03

Finding the Fourth Proportional to 12,268.61, 18,399.26 and 4,478.03

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Solution

The fourth proportional to 12,268.61, 18,399.26 and 4,478.03 is: 6,715.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,268.61 : 18,399.26 = 4,478.03 : x
  2. Step 2: Convert to fraction form
    12,268.61/18,399.26 = 4,478.03/x
  3. Step 3: Cross multiply
    12,268.61x = 18,399.26 × 4,478.03
  4. Step 4: Simplify right side
    12,268.61x = 82,392,346.26
  5. Step 5: Solve for x
    x = 82,392,346.26/12,268.61
  6. Step 6: Final answer
    x = 6,715.71

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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.