Home / 20,716.33-28,588.53-11,284.89

Finding the Fourth Proportional to 20,716.33, 28,588.53 and 11,284.89

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Solution

The fourth proportional to 20,716.33, 28,588.53 and 11,284.89 is: 15,573.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.33 : 28,588.53 = 11,284.89 : x
  2. Step 2: Convert to fraction form
    20,716.33/28,588.53 = 11,284.89/x
  3. Step 3: Cross multiply
    20,716.33x = 28,588.53 × 11,284.89
  4. Step 4: Simplify right side
    20,716.33x = 322,618,416.31
  5. Step 5: Solve for x
    x = 322,618,416.31/20,716.33
  6. Step 6: Final answer
    x = 15,573.15

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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.