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Finding the Fourth Proportional to 20,754.86, 28,642.02 and 11,323.41

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Solution

The fourth proportional to 20,754.86, 28,642.02 and 11,323.41 is: 15,626.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.86 : 28,642.02 = 11,323.41 : x
  2. Step 2: Convert to fraction form
    20,754.86/28,642.02 = 11,323.41/x
  3. Step 3: Cross multiply
    20,754.86x = 28,642.02 × 11,323.41
  4. Step 4: Simplify right side
    20,754.86x = 324,325,335.69
  5. Step 5: Solve for x
    x = 324,325,335.69/20,754.86
  6. Step 6: Final answer
    x = 15,626.48

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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.