Home / 12,879.28-17,755.96-11,010.94

Finding the Fourth Proportional to 12,879.28, 17,755.96 and 11,010.94

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Solution

The fourth proportional to 12,879.28, 17,755.96 and 11,010.94 is: 15,180.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.28 : 17,755.96 = 11,010.94 : x
  2. Step 2: Convert to fraction form
    12,879.28/17,755.96 = 11,010.94/x
  3. Step 3: Cross multiply
    12,879.28x = 17,755.96 × 11,010.94
  4. Step 4: Simplify right side
    12,879.28x = 195,509,810.20
  5. Step 5: Solve for x
    x = 195,509,810.20/12,879.28
  6. Step 6: Final answer
    x = 15,180.18

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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.