Home / 12,078.44-16,662.57-8,543.60

Finding the Fourth Proportional to 12,078.44, 16,662.57 and 8,543.60

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Solution

The fourth proportional to 12,078.44, 16,662.57 and 8,543.60 is: 11,786.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.44 : 16,662.57 = 8,543.60 : x
  2. Step 2: Convert to fraction form
    12,078.44/16,662.57 = 8,543.60/x
  3. Step 3: Cross multiply
    12,078.44x = 16,662.57 × 8,543.60
  4. Step 4: Simplify right side
    12,078.44x = 142,358,291.40
  5. Step 5: Solve for x
    x = 142,358,291.40/12,078.44
  6. Step 6: Final answer
    x = 11,786.15

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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.