Home / 20,738.79-28,610.43-14,021.96

Finding the Fourth Proportional to 20,738.79, 28,610.43 and 14,021.96

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Solution

The fourth proportional to 20,738.79, 28,610.43 and 14,021.96 is: 19,344.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.79 : 28,610.43 = 14,021.96 : x
  2. Step 2: Convert to fraction form
    20,738.79/28,610.43 = 14,021.96/x
  3. Step 3: Cross multiply
    20,738.79x = 28,610.43 × 14,021.96
  4. Step 4: Simplify right side
    20,738.79x = 401,174,268.57
  5. Step 5: Solve for x
    x = 401,174,268.57/20,738.79
  6. Step 6: Final answer
    x = 19,344.15

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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.