Home / 20,997.54-28,976.28-11,566.14

Finding the Fourth Proportional to 20,997.54, 28,976.28 and 11,566.14

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Solution

The fourth proportional to 20,997.54, 28,976.28 and 11,566.14 is: 15,961.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.54 : 28,976.28 = 11,566.14 : x
  2. Step 2: Convert to fraction form
    20,997.54/28,976.28 = 11,566.14/x
  3. Step 3: Cross multiply
    20,997.54x = 28,976.28 × 11,566.14
  4. Step 4: Simplify right side
    20,997.54x = 335,143,711.16
  5. Step 5: Solve for x
    x = 335,143,711.16/20,997.54
  6. Step 6: Final answer
    x = 15,961.09

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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.