Home / 20,651.94-28,504.20-13,579.02

Finding the Fourth Proportional to 20,651.94, 28,504.20 and 13,579.02

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Solution

The fourth proportional to 20,651.94, 28,504.20 and 13,579.02 is: 18,742.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.94 : 28,504.20 = 13,579.02 : x
  2. Step 2: Convert to fraction form
    20,651.94/28,504.20 = 13,579.02/x
  3. Step 3: Cross multiply
    20,651.94x = 28,504.20 × 13,579.02
  4. Step 4: Simplify right side
    20,651.94x = 387,059,101.88
  5. Step 5: Solve for x
    x = 387,059,101.88/20,651.94
  6. Step 6: Final answer
    x = 18,742.02

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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.