Home / 20,832.35-28,748.54-11,272.23

Finding the Fourth Proportional to 20,832.35, 28,748.54 and 11,272.23

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Solution

The fourth proportional to 20,832.35, 28,748.54 and 11,272.23 is: 15,555.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.35 : 28,748.54 = 11,272.23 : x
  2. Step 2: Convert to fraction form
    20,832.35/28,748.54 = 11,272.23/x
  3. Step 3: Cross multiply
    20,832.35x = 28,748.54 × 11,272.23
  4. Step 4: Simplify right side
    20,832.35x = 324,060,183.22
  5. Step 5: Solve for x
    x = 324,060,183.22/20,832.35
  6. Step 6: Final answer
    x = 15,555.63

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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.