Home / 12,622.64-18,933.68-3,388.64

Finding the Fourth Proportional to 12,622.64, 18,933.68 and 3,388.64

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Solution

The fourth proportional to 12,622.64, 18,933.68 and 3,388.64 is: 5,082.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.64 : 18,933.68 = 3,388.64 : x
  2. Step 2: Convert to fraction form
    12,622.64/18,933.68 = 3,388.64/x
  3. Step 3: Cross multiply
    12,622.64x = 18,933.68 × 3,388.64
  4. Step 4: Simplify right side
    12,622.64x = 64,159,339.20
  5. Step 5: Solve for x
    x = 64,159,339.20/12,622.64
  6. Step 6: Final answer
    x = 5,082.88

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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.