Home / 20,137.02-27,788.32-11,185.10

Finding the Fourth Proportional to 20,137.02, 27,788.32 and 11,185.10

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Solution

The fourth proportional to 20,137.02, 27,788.32 and 11,185.10 is: 15,435.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.02 : 27,788.32 = 11,185.10 : x
  2. Step 2: Convert to fraction form
    20,137.02/27,788.32 = 11,185.10/x
  3. Step 3: Cross multiply
    20,137.02x = 27,788.32 × 11,185.10
  4. Step 4: Simplify right side
    20,137.02x = 310,815,221.48
  5. Step 5: Solve for x
    x = 310,815,221.48/20,137.02
  6. Step 6: Final answer
    x = 15,435.02

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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.