Home / 13,621.88-20,425.49-4,132.88

Finding the Fourth Proportional to 13,621.88, 20,425.49 and 4,132.88

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Solution

The fourth proportional to 13,621.88, 20,425.49 and 4,132.88 is: 6,197.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.88 : 20,425.49 = 4,132.88 : x
  2. Step 2: Convert to fraction form
    13,621.88/20,425.49 = 4,132.88/x
  3. Step 3: Cross multiply
    13,621.88x = 20,425.49 × 4,132.88
  4. Step 4: Simplify right side
    13,621.88x = 84,415,976.32
  5. Step 5: Solve for x
    x = 84,415,976.32/13,621.88
  6. Step 6: Final answer
    x = 6,197.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.