Home / 20,884.85-28,819.22-11,932.32

Finding the Fourth Proportional to 20,884.85, 28,819.22 and 11,932.32

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Solution

The fourth proportional to 20,884.85, 28,819.22 and 11,932.32 is: 16,465.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.85 : 28,819.22 = 11,932.32 : x
  2. Step 2: Convert to fraction form
    20,884.85/28,819.22 = 11,932.32/x
  3. Step 3: Cross multiply
    20,884.85x = 28,819.22 × 11,932.32
  4. Step 4: Simplify right side
    20,884.85x = 343,880,095.53
  5. Step 5: Solve for x
    x = 343,880,095.53/20,884.85
  6. Step 6: Final answer
    x = 16,465.53

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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.