Home / 20,157.58-27,817.42-11,205.91

Finding the Fourth Proportional to 20,157.58, 27,817.42 and 11,205.91

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Solution

The fourth proportional to 20,157.58, 27,817.42 and 11,205.91 is: 15,464.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157.58 : 27,817.42 = 11,205.91 : x
  2. Step 2: Convert to fraction form
    20,157.58/27,817.42 = 11,205.91/x
  3. Step 3: Cross multiply
    20,157.58x = 27,817.42 × 11,205.91
  4. Step 4: Simplify right side
    20,157.58x = 311,719,504.95
  5. Step 5: Solve for x
    x = 311,719,504.95/20,157.58
  6. Step 6: Final answer
    x = 15,464.13

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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.