Home / 20,745.12-28,633.44-12,360

Finding the Fourth Proportional to 20,745.12, 28,633.44 and 12,360

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Solution

The fourth proportional to 20,745.12, 28,633.44 and 12,360 is: 17,059.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.12 : 28,633.44 = 12,360 : x
  2. Step 2: Convert to fraction form
    20,745.12/28,633.44 = 12,360/x
  3. Step 3: Cross multiply
    20,745.12x = 28,633.44 × 12,360
  4. Step 4: Simplify right side
    20,745.12x = 353,909,318.40
  5. Step 5: Solve for x
    x = 353,909,318.40/20,745.12
  6. Step 6: Final answer
    x = 17,059.88

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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.