Home / 20,716.26-28,589.31-11,285.34

Finding the Fourth Proportional to 20,716.26, 28,589.31 and 11,285.34

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Solution

The fourth proportional to 20,716.26, 28,589.31 and 11,285.34 is: 15,574.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.26 : 28,589.31 = 11,285.34 : x
  2. Step 2: Convert to fraction form
    20,716.26/28,589.31 = 11,285.34/x
  3. Step 3: Cross multiply
    20,716.26x = 28,589.31 × 11,285.34
  4. Step 4: Simplify right side
    20,716.26x = 322,640,083.72
  5. Step 5: Solve for x
    x = 322,640,083.72/20,716.26
  6. Step 6: Final answer
    x = 15,574.24

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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.