Home / 20,464.78-28,241.13-11,512.26

Finding the Fourth Proportional to 20,464.78, 28,241.13 and 11,512.26

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Solution

The fourth proportional to 20,464.78, 28,241.13 and 11,512.26 is: 15,886.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.78 : 28,241.13 = 11,512.26 : x
  2. Step 2: Convert to fraction form
    20,464.78/28,241.13 = 11,512.26/x
  3. Step 3: Cross multiply
    20,464.78x = 28,241.13 × 11,512.26
  4. Step 4: Simplify right side
    20,464.78x = 325,119,231.25
  5. Step 5: Solve for x
    x = 325,119,231.25/20,464.78
  6. Step 6: Final answer
    x = 15,886.77

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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.