Home / 20,716.70-28,589.36-11,285.26

Finding the Fourth Proportional to 20,716.70, 28,589.36 and 11,285.26

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Solution

The fourth proportional to 20,716.70, 28,589.36 and 11,285.26 is: 15,573.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.70 : 28,589.36 = 11,285.26 : x
  2. Step 2: Convert to fraction form
    20,716.70/28,589.36 = 11,285.26/x
  3. Step 3: Cross multiply
    20,716.70x = 28,589.36 × 11,285.26
  4. Step 4: Simplify right side
    20,716.70x = 322,638,232.93
  5. Step 5: Solve for x
    x = 322,638,232.93/20,716.70
  6. Step 6: Final answer
    x = 15,573.83

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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.