Home / 20,745.08-28,620.06-12,773.48

Finding the Fourth Proportional to 20,745.08, 28,620.06 and 12,773.48

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Solution

The fourth proportional to 20,745.08, 28,620.06 and 12,773.48 is: 17,622.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.08 : 28,620.06 = 12,773.48 : x
  2. Step 2: Convert to fraction form
    20,745.08/28,620.06 = 12,773.48/x
  3. Step 3: Cross multiply
    20,745.08x = 28,620.06 × 12,773.48
  4. Step 4: Simplify right side
    20,745.08x = 365,577,764.01
  5. Step 5: Solve for x
    x = 365,577,764.01/20,745.08
  6. Step 6: Final answer
    x = 17,622.38

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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.