Home / 20,759.41-28,647.99-12,806.25

Finding the Fourth Proportional to 20,759.41, 28,647.99 and 12,806.25

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Solution

The fourth proportional to 20,759.41, 28,647.99 and 12,806.25 is: 17,672.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.41 : 28,647.99 = 12,806.25 : x
  2. Step 2: Convert to fraction form
    20,759.41/28,647.99 = 12,806.25/x
  3. Step 3: Cross multiply
    20,759.41x = 28,647.99 × 12,806.25
  4. Step 4: Simplify right side
    20,759.41x = 366,873,393.66
  5. Step 5: Solve for x
    x = 366,873,393.66/20,759.41
  6. Step 6: Final answer
    x = 17,672.63

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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.