Home / 12,144.49-16,759.70-6,839.50

Finding the Fourth Proportional to 12,144.49, 16,759.70 and 6,839.50

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Solution

The fourth proportional to 12,144.49, 16,759.70 and 6,839.50 is: 9,438.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.49 : 16,759.70 = 6,839.50 : x
  2. Step 2: Convert to fraction form
    12,144.49/16,759.70 = 6,839.50/x
  3. Step 3: Cross multiply
    12,144.49x = 16,759.70 × 6,839.50
  4. Step 4: Simplify right side
    12,144.49x = 114,627,968.15
  5. Step 5: Solve for x
    x = 114,627,968.15/12,144.49
  6. Step 6: Final answer
    x = 9,438.68

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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.