Home / 20,814.75-28,723.77-11,383.11

Finding the Fourth Proportional to 20,814.75, 28,723.77 and 11,383.11

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Solution

The fourth proportional to 20,814.75, 28,723.77 and 11,383.11 is: 15,708.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,814.75 : 28,723.77 = 11,383.11 : x
  2. Step 2: Convert to fraction form
    20,814.75/28,723.77 = 11,383.11/x
  3. Step 3: Cross multiply
    20,814.75x = 28,723.77 × 11,383.11
  4. Step 4: Simplify right side
    20,814.75x = 326,965,833.52
  5. Step 5: Solve for x
    x = 326,965,833.52/20,814.75
  6. Step 6: Final answer
    x = 15,708.37

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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.