Home / 20,698.48-28,563.11-11,745.45

Finding the Fourth Proportional to 20,698.48, 28,563.11 and 11,745.45

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Solution

The fourth proportional to 20,698.48, 28,563.11 and 11,745.45 is: 16,208.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.48 : 28,563.11 = 11,745.45 : x
  2. Step 2: Convert to fraction form
    20,698.48/28,563.11 = 11,745.45/x
  3. Step 3: Cross multiply
    20,698.48x = 28,563.11 × 11,745.45
  4. Step 4: Simplify right side
    20,698.48x = 335,486,580.35
  5. Step 5: Solve for x
    x = 335,486,580.35/20,698.48
  6. Step 6: Final answer
    x = 16,208.27

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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.