Home / 20,522.58-28,321.29-11,091.12

Finding the Fourth Proportional to 20,522.58, 28,321.29 and 11,091.12

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Solution

The fourth proportional to 20,522.58, 28,321.29 and 11,091.12 is: 15,305.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522.58 : 28,321.29 = 11,091.12 : x
  2. Step 2: Convert to fraction form
    20,522.58/28,321.29 = 11,091.12/x
  3. Step 3: Cross multiply
    20,522.58x = 28,321.29 × 11,091.12
  4. Step 4: Simplify right side
    20,522.58x = 314,114,825.94
  5. Step 5: Solve for x
    x = 314,114,825.94/20,522.58
  6. Step 6: Final answer
    x = 15,305.82

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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.