Home / 20,181.83-27,889.32-15,137.29

Finding the Fourth Proportional to 20,181.83, 27,889.32 and 15,137.29

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Solution

The fourth proportional to 20,181.83, 27,889.32 and 15,137.29 is: 20,918.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.83 : 27,889.32 = 15,137.29 : x
  2. Step 2: Convert to fraction form
    20,181.83/27,889.32 = 15,137.29/x
  3. Step 3: Cross multiply
    20,181.83x = 27,889.32 × 15,137.29
  4. Step 4: Simplify right side
    20,181.83x = 422,168,585.30
  5. Step 5: Solve for x
    x = 422,168,585.30/20,181.83
  6. Step 6: Final answer
    x = 20,918.26

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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.