Home / 20,910.27-28,855.39-11,349.95

Finding the Fourth Proportional to 20,910.27, 28,855.39 and 11,349.95

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Solution

The fourth proportional to 20,910.27, 28,855.39 and 11,349.95 is: 15,662.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.27 : 28,855.39 = 11,349.95 : x
  2. Step 2: Convert to fraction form
    20,910.27/28,855.39 = 11,349.95/x
  3. Step 3: Cross multiply
    20,910.27x = 28,855.39 × 11,349.95
  4. Step 4: Simplify right side
    20,910.27x = 327,507,169.29
  5. Step 5: Solve for x
    x = 327,507,169.29/20,910.27
  6. Step 6: Final answer
    x = 15,662.51

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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.