Home / 20,832.57-28,749.42-11,401.16

Finding the Fourth Proportional to 20,832.57, 28,749.42 and 11,401.16

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Solution

The fourth proportional to 20,832.57, 28,749.42 and 11,401.16 is: 15,733.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.57 : 28,749.42 = 11,401.16 : x
  2. Step 2: Convert to fraction form
    20,832.57/28,749.42 = 11,401.16/x
  3. Step 3: Cross multiply
    20,832.57x = 28,749.42 × 11,401.16
  4. Step 4: Simplify right side
    20,832.57x = 327,776,593.58
  5. Step 5: Solve for x
    x = 327,776,593.58/20,832.57
  6. Step 6: Final answer
    x = 15,733.85

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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.