Home / 20,832.69-28,749.11-11,401.25

Finding the Fourth Proportional to 20,832.69, 28,749.11 and 11,401.25

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Solution

The fourth proportional to 20,832.69, 28,749.11 and 11,401.25 is: 15,733.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.69 : 28,749.11 = 11,401.25 : x
  2. Step 2: Convert to fraction form
    20,832.69/28,749.11 = 11,401.25/x
  3. Step 3: Cross multiply
    20,832.69x = 28,749.11 × 11,401.25
  4. Step 4: Simplify right side
    20,832.69x = 327,775,790.39
  5. Step 5: Solve for x
    x = 327,775,790.39/20,832.69
  6. Step 6: Final answer
    x = 15,733.72

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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.