Home / 20,832.19-28,749.03-11,401.36

Finding the Fourth Proportional to 20,832.19, 28,749.03 and 11,401.36

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Solution

The fourth proportional to 20,832.19, 28,749.03 and 11,401.36 is: 15,734.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.19 : 28,749.03 = 11,401.36 : x
  2. Step 2: Convert to fraction form
    20,832.19/28,749.03 = 11,401.36/x
  3. Step 3: Cross multiply
    20,832.19x = 28,749.03 × 11,401.36
  4. Step 4: Simplify right side
    20,832.19x = 327,777,926.05
  5. Step 5: Solve for x
    x = 327,777,926.05/20,832.19
  6. Step 6: Final answer
    x = 15,734.21

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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.