Home / 20,784.88-28,667.26-13,232.44

Finding the Fourth Proportional to 20,784.88, 28,667.26 and 13,232.44

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Solution

The fourth proportional to 20,784.88, 28,667.26 and 13,232.44 is: 18,250.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.88 : 28,667.26 = 13,232.44 : x
  2. Step 2: Convert to fraction form
    20,784.88/28,667.26 = 13,232.44/x
  3. Step 3: Cross multiply
    20,784.88x = 28,667.26 × 13,232.44
  4. Step 4: Simplify right side
    20,784.88x = 379,337,797.91
  5. Step 5: Solve for x
    x = 379,337,797.91/20,784.88
  6. Step 6: Final answer
    x = 18,250.66

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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.