Home / 20,198.12-27,887.09-12,647.48

Finding the Fourth Proportional to 20,198.12, 27,887.09 and 12,647.48

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Solution

The fourth proportional to 20,198.12, 27,887.09 and 12,647.48 is: 17,462.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,198.12 : 27,887.09 = 12,647.48 : x
  2. Step 2: Convert to fraction form
    20,198.12/27,887.09 = 12,647.48/x
  3. Step 3: Cross multiply
    20,198.12x = 27,887.09 × 12,647.48
  4. Step 4: Simplify right side
    20,198.12x = 352,701,210.36
  5. Step 5: Solve for x
    x = 352,701,210.36/20,198.12
  6. Step 6: Final answer
    x = 17,462.09

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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.