Home / 20,135.10-27,781.41-12,070.02

Finding the Fourth Proportional to 20,135.10, 27,781.41 and 12,070.02

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Solution

The fourth proportional to 20,135.10, 27,781.41 and 12,070.02 is: 16,653.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.10 : 27,781.41 = 12,070.02 : x
  2. Step 2: Convert to fraction form
    20,135.10/27,781.41 = 12,070.02/x
  3. Step 3: Cross multiply
    20,135.10x = 27,781.41 × 12,070.02
  4. Step 4: Simplify right side
    20,135.10x = 335,322,174.33
  5. Step 5: Solve for x
    x = 335,322,174.33/20,135.10
  6. Step 6: Final answer
    x = 16,653.61

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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.