Home / 20,608.56-28,440.30-12,539.44

Finding the Fourth Proportional to 20,608.56, 28,440.30 and 12,539.44

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Solution

The fourth proportional to 20,608.56, 28,440.30 and 12,539.44 is: 17,304.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,608.56 : 28,440.30 = 12,539.44 : x
  2. Step 2: Convert to fraction form
    20,608.56/28,440.30 = 12,539.44/x
  3. Step 3: Cross multiply
    20,608.56x = 28,440.30 × 12,539.44
  4. Step 4: Simplify right side
    20,608.56x = 356,625,435.43
  5. Step 5: Solve for x
    x = 356,625,435.43/20,608.56
  6. Step 6: Final answer
    x = 17,304.72

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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.