Home / 20,844.51-28,768.16-11,889.96

Finding the Fourth Proportional to 20,844.51, 28,768.16 and 11,889.96

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Solution

The fourth proportional to 20,844.51, 28,768.16 and 11,889.96 is: 16,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.51 : 28,768.16 = 11,889.96 : x
  2. Step 2: Convert to fraction form
    20,844.51/28,768.16 = 11,889.96/x
  3. Step 3: Cross multiply
    20,844.51x = 28,768.16 × 11,889.96
  4. Step 4: Simplify right side
    20,844.51x = 342,052,212.22
  5. Step 5: Solve for x
    x = 342,052,212.22/20,844.51
  6. Step 6: Final answer
    x = 16,409.70

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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.