Home / 20,997.37-28,973.73-11,566.54

Finding the Fourth Proportional to 20,997.37, 28,973.73 and 11,566.54

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Solution

The fourth proportional to 20,997.37, 28,973.73 and 11,566.54 is: 15,960.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.37 : 28,973.73 = 11,566.54 : x
  2. Step 2: Convert to fraction form
    20,997.37/28,973.73 = 11,566.54/x
  3. Step 3: Cross multiply
    20,997.37x = 28,973.73 × 11,566.54
  4. Step 4: Simplify right side
    20,997.37x = 335,125,806.99
  5. Step 5: Solve for x
    x = 335,125,806.99/20,997.37
  6. Step 6: Final answer
    x = 15,960.37

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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.