Home / 11,986.49-16,541.58-6,680.74

Finding the Fourth Proportional to 11,986.49, 16,541.58 and 6,680.74

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Solution

The fourth proportional to 11,986.49, 16,541.58 and 6,680.74 is: 9,219.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.49 : 16,541.58 = 6,680.74 : x
  2. Step 2: Convert to fraction form
    11,986.49/16,541.58 = 6,680.74/x
  3. Step 3: Cross multiply
    11,986.49x = 16,541.58 × 6,680.74
  4. Step 4: Simplify right side
    11,986.49x = 110,509,949.44
  5. Step 5: Solve for x
    x = 110,509,949.44/11,986.49
  6. Step 6: Final answer
    x = 9,219.54

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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.