Home / 20,464.88-28,241.36-11,512.48

Finding the Fourth Proportional to 20,464.88, 28,241.36 and 11,512.48

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Solution

The fourth proportional to 20,464.88, 28,241.36 and 11,512.48 is: 15,887.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.88 : 28,241.36 = 11,512.48 : x
  2. Step 2: Convert to fraction form
    20,464.88/28,241.36 = 11,512.48/x
  3. Step 3: Cross multiply
    20,464.88x = 28,241.36 × 11,512.48
  4. Step 4: Simplify right side
    20,464.88x = 325,128,092.17
  5. Step 5: Solve for x
    x = 325,128,092.17/20,464.88
  6. Step 6: Final answer
    x = 15,887.12

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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.