Home / 12,214.28-18,322.64-3,782.79

Finding the Fourth Proportional to 12,214.28, 18,322.64 and 3,782.79

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Solution

The fourth proportional to 12,214.28, 18,322.64 and 3,782.79 is: 5,674.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,214.28 : 18,322.64 = 3,782.79 : x
  2. Step 2: Convert to fraction form
    12,214.28/18,322.64 = 3,782.79/x
  3. Step 3: Cross multiply
    12,214.28x = 18,322.64 × 3,782.79
  4. Step 4: Simplify right side
    12,214.28x = 69,310,680.45
  5. Step 5: Solve for x
    x = 69,310,680.45/12,214.28
  6. Step 6: Final answer
    x = 5,674.56

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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.