Home / 20,946.95-28,906.79-11,997.41

Finding the Fourth Proportional to 20,946.95, 28,906.79 and 11,997.41

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Solution

The fourth proportional to 20,946.95, 28,906.79 and 11,997.41 is: 16,556.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.95 : 28,906.79 = 11,997.41 : x
  2. Step 2: Convert to fraction form
    20,946.95/28,906.79 = 11,997.41/x
  3. Step 3: Cross multiply
    20,946.95x = 28,906.79 × 11,997.41
  4. Step 4: Simplify right side
    20,946.95x = 346,806,406.89
  5. Step 5: Solve for x
    x = 346,806,406.89/20,946.95
  6. Step 6: Final answer
    x = 16,556.42

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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.