Home / 20,716.25-28,588.43-11,284.81

Finding the Fourth Proportional to 20,716.25, 28,588.43 and 11,284.81

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Solution

The fourth proportional to 20,716.25, 28,588.43 and 11,284.81 is: 15,573.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.25 : 28,588.43 = 11,284.81 : x
  2. Step 2: Convert to fraction form
    20,716.25/28,588.43 = 11,284.81/x
  3. Step 3: Cross multiply
    20,716.25x = 28,588.43 × 11,284.81
  4. Step 4: Simplify right side
    20,716.25x = 322,615,000.75
  5. Step 5: Solve for x
    x = 322,615,000.75/20,716.25
  6. Step 6: Final answer
    x = 15,573.04

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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.