Home / 20,885.43-28,819.22-11,933.51

Finding the Fourth Proportional to 20,885.43, 28,819.22 and 11,933.51

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Solution

The fourth proportional to 20,885.43, 28,819.22 and 11,933.51 is: 16,466.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.43 : 28,819.22 = 11,933.51 : x
  2. Step 2: Convert to fraction form
    20,885.43/28,819.22 = 11,933.51/x
  3. Step 3: Cross multiply
    20,885.43x = 28,819.22 × 11,933.51
  4. Step 4: Simplify right side
    20,885.43x = 343,914,458.79
  5. Step 5: Solve for x
    x = 343,914,458.79/20,885.43
  6. Step 6: Final answer
    x = 16,466.72

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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.