Home / 20,886.26-28,824.57-11,933.57

Finding the Fourth Proportional to 20,886.26, 28,824.57 and 11,933.57

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Solution

The fourth proportional to 20,886.26, 28,824.57 and 11,933.57 is: 16,469.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.26 : 28,824.57 = 11,933.57 : x
  2. Step 2: Convert to fraction form
    20,886.26/28,824.57 = 11,933.57/x
  3. Step 3: Cross multiply
    20,886.26x = 28,824.57 × 11,933.57
  4. Step 4: Simplify right side
    20,886.26x = 343,980,023.81
  5. Step 5: Solve for x
    x = 343,980,023.81/20,886.26
  6. Step 6: Final answer
    x = 16,469.20

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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.