Home / 20,968.97-28,938.84-12,017.30

Finding the Fourth Proportional to 20,968.97, 28,938.84 and 12,017.30

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Solution

The fourth proportional to 20,968.97, 28,938.84 and 12,017.30 is: 16,584.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.97 : 28,938.84 = 12,017.30 : x
  2. Step 2: Convert to fraction form
    20,968.97/28,938.84 = 12,017.30/x
  3. Step 3: Cross multiply
    20,968.97x = 28,938.84 × 12,017.30
  4. Step 4: Simplify right side
    20,968.97x = 347,766,839.34
  5. Step 5: Solve for x
    x = 347,766,839.34/20,968.97
  6. Step 6: Final answer
    x = 16,584.83

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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.