Home / 20,771.59-28,663.71-11,338.33

Finding the Fourth Proportional to 20,771.59, 28,663.71 and 11,338.33

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Solution

The fourth proportional to 20,771.59, 28,663.71 and 11,338.33 is: 15,646.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771.59 : 28,663.71 = 11,338.33 : x
  2. Step 2: Convert to fraction form
    20,771.59/28,663.71 = 11,338.33/x
  3. Step 3: Cross multiply
    20,771.59x = 28,663.71 × 11,338.33
  4. Step 4: Simplify right side
    20,771.59x = 324,998,603.00
  5. Step 5: Solve for x
    x = 324,998,603.00/20,771.59
  6. Step 6: Final answer
    x = 15,646.30

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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.