Home / 20,736.70-28,608.48-12,765.07

Finding the Fourth Proportional to 20,736.70, 28,608.48 and 12,765.07

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Solution

The fourth proportional to 20,736.70, 28,608.48 and 12,765.07 is: 17,610.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.70 : 28,608.48 = 12,765.07 : x
  2. Step 2: Convert to fraction form
    20,736.70/28,608.48 = 12,765.07/x
  3. Step 3: Cross multiply
    20,736.70x = 28,608.48 × 12,765.07
  4. Step 4: Simplify right side
    20,736.70x = 365,189,249.79
  5. Step 5: Solve for x
    x = 365,189,249.79/20,736.70
  6. Step 6: Final answer
    x = 17,610.77

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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.