Home / 20,181.30-27,850.86-11,107.02

Finding the Fourth Proportional to 20,181.30, 27,850.86 and 11,107.02

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Solution

The fourth proportional to 20,181.30, 27,850.86 and 11,107.02 is: 15,328.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.30 : 27,850.86 = 11,107.02 : x
  2. Step 2: Convert to fraction form
    20,181.30/27,850.86 = 11,107.02/x
  3. Step 3: Cross multiply
    20,181.30x = 27,850.86 × 11,107.02
  4. Step 4: Simplify right side
    20,181.30x = 309,340,059.04
  5. Step 5: Solve for x
    x = 309,340,059.04/20,181.30
  6. Step 6: Final answer
    x = 15,328.05

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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.