Home / 20,946.88-28,907.34-11,997.28

Finding the Fourth Proportional to 20,946.88, 28,907.34 and 11,997.28

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Solution

The fourth proportional to 20,946.88, 28,907.34 and 11,997.28 is: 16,556.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.88 : 28,907.34 = 11,997.28 : x
  2. Step 2: Convert to fraction form
    20,946.88/28,907.34 = 11,997.28/x
  3. Step 3: Cross multiply
    20,946.88x = 28,907.34 × 11,997.28
  4. Step 4: Simplify right side
    20,946.88x = 346,809,452.04
  5. Step 5: Solve for x
    x = 346,809,452.04/20,946.88
  6. Step 6: Final answer
    x = 16,556.62

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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.