Home / 20,365.13-28,105.49-11,983.25

Finding the Fourth Proportional to 20,365.13, 28,105.49 and 11,983.25

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Solution

The fourth proportional to 20,365.13, 28,105.49 and 11,983.25 is: 16,537.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.13 : 28,105.49 = 11,983.25 : x
  2. Step 2: Convert to fraction form
    20,365.13/28,105.49 = 11,983.25/x
  3. Step 3: Cross multiply
    20,365.13x = 28,105.49 × 11,983.25
  4. Step 4: Simplify right side
    20,365.13x = 336,795,002.47
  5. Step 5: Solve for x
    x = 336,795,002.47/20,365.13
  6. Step 6: Final answer
    x = 16,537.83

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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.