Home / 20,886.10-28,820.94-11,933.57

Finding the Fourth Proportional to 20,886.10, 28,820.94 and 11,933.57

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Solution

The fourth proportional to 20,886.10, 28,820.94 and 11,933.57 is: 16,467.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.10 : 28,820.94 = 11,933.57 : x
  2. Step 2: Convert to fraction form
    20,886.10/28,820.94 = 11,933.57/x
  3. Step 3: Cross multiply
    20,886.10x = 28,820.94 × 11,933.57
  4. Step 4: Simplify right side
    20,886.10x = 343,936,704.96
  5. Step 5: Solve for x
    x = 343,936,704.96/20,886.10
  6. Step 6: Final answer
    x = 16,467.25

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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.