Home / 20,626.42-28,464.32-11,194.78

Finding the Fourth Proportional to 20,626.42, 28,464.32 and 11,194.78

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Solution

The fourth proportional to 20,626.42, 28,464.32 and 11,194.78 is: 15,448.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,626.42 : 28,464.32 = 11,194.78 : x
  2. Step 2: Convert to fraction form
    20,626.42/28,464.32 = 11,194.78/x
  3. Step 3: Cross multiply
    20,626.42x = 28,464.32 × 11,194.78
  4. Step 4: Simplify right side
    20,626.42x = 318,651,800.25
  5. Step 5: Solve for x
    x = 318,651,800.25/20,626.42
  6. Step 6: Final answer
    x = 15,448.72

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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.