Home / 13,142.66-18,092.57-11,879.97

Finding the Fourth Proportional to 13,142.66, 18,092.57 and 11,879.97

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Solution

The fourth proportional to 13,142.66, 18,092.57 and 11,879.97 is: 16,354.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.66 : 18,092.57 = 11,879.97 : x
  2. Step 2: Convert to fraction form
    13,142.66/18,092.57 = 11,879.97/x
  3. Step 3: Cross multiply
    13,142.66x = 18,092.57 × 11,879.97
  4. Step 4: Simplify right side
    13,142.66x = 214,939,061.58
  5. Step 5: Solve for x
    x = 214,939,061.58/13,142.66
  6. Step 6: Final answer
    x = 16,354.31

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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.