Home / 20,626.64-28,464.84-11,195.21

Finding the Fourth Proportional to 20,626.64, 28,464.84 and 11,195.21

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Solution

The fourth proportional to 20,626.64, 28,464.84 and 11,195.21 is: 15,449.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,626.64 : 28,464.84 = 11,195.21 : x
  2. Step 2: Convert to fraction form
    20,626.64/28,464.84 = 11,195.21/x
  3. Step 3: Cross multiply
    20,626.64x = 28,464.84 × 11,195.21
  4. Step 4: Simplify right side
    20,626.64x = 318,669,719.09
  5. Step 5: Solve for x
    x = 318,669,719.09/20,626.64
  6. Step 6: Final answer
    x = 15,449.42

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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.