Home / 20,286-27,999.63-12,333.51

Finding the Fourth Proportional to 20,286, 27,999.63 and 12,333.51

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Solution

The fourth proportional to 20,286, 27,999.63 and 12,333.51 is: 17,023.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286 : 27,999.63 = 12,333.51 : x
  2. Step 2: Convert to fraction form
    20,286/27,999.63 = 12,333.51/x
  3. Step 3: Cross multiply
    20,286x = 27,999.63 × 12,333.51
  4. Step 4: Simplify right side
    20,286x = 345,333,716.60
  5. Step 5: Solve for x
    x = 345,333,716.60/20,286
  6. Step 6: Final answer
    x = 17,023.25

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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.