Home / 20,672.72-28,529.52-11,241.12

Finding the Fourth Proportional to 20,672.72, 28,529.52 and 11,241.12

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Solution

The fourth proportional to 20,672.72, 28,529.52 and 11,241.12 is: 15,513.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.72 : 28,529.52 = 11,241.12 : x
  2. Step 2: Convert to fraction form
    20,672.72/28,529.52 = 11,241.12/x
  3. Step 3: Cross multiply
    20,672.72x = 28,529.52 × 11,241.12
  4. Step 4: Simplify right side
    20,672.72x = 320,703,757.86
  5. Step 5: Solve for x
    x = 320,703,757.86/20,672.72
  6. Step 6: Final answer
    x = 15,513.38

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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.