Home / 20,433.81-28,199.37-11,481.12

Finding the Fourth Proportional to 20,433.81, 28,199.37 and 11,481.12

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Solution

The fourth proportional to 20,433.81, 28,199.37 and 11,481.12 is: 15,844.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.81 : 28,199.37 = 11,481.12 : x
  2. Step 2: Convert to fraction form
    20,433.81/28,199.37 = 11,481.12/x
  3. Step 3: Cross multiply
    20,433.81x = 28,199.37 × 11,481.12
  4. Step 4: Simplify right side
    20,433.81x = 323,760,350.89
  5. Step 5: Solve for x
    x = 323,760,350.89/20,433.81
  6. Step 6: Final answer
    x = 15,844.35

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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.