Home / 20,314.29-28,021.96-12,242.44

Finding the Fourth Proportional to 20,314.29, 28,021.96 and 12,242.44

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Solution

The fourth proportional to 20,314.29, 28,021.96 and 12,242.44 is: 16,887.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,314.29 : 28,021.96 = 12,242.44 : x
  2. Step 2: Convert to fraction form
    20,314.29/28,021.96 = 12,242.44/x
  3. Step 3: Cross multiply
    20,314.29x = 28,021.96 × 12,242.44
  4. Step 4: Simplify right side
    20,314.29x = 343,057,163.98
  5. Step 5: Solve for x
    x = 343,057,163.98/20,314.29
  6. Step 6: Final answer
    x = 16,887.48

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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.