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Finding the Fourth Proportional to 12,074.76, 16,661.88 and 6,768.36

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Solution

The fourth proportional to 12,074.76, 16,661.88 and 6,768.36 is: 9,339.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,074.76 : 16,661.88 = 6,768.36 : x
  2. Step 2: Convert to fraction form
    12,074.76/16,661.88 = 6,768.36/x
  3. Step 3: Cross multiply
    12,074.76x = 16,661.88 × 6,768.36
  4. Step 4: Simplify right side
    12,074.76x = 112,773,602.12
  5. Step 5: Solve for x
    x = 112,773,602.12/12,074.76
  6. Step 6: Final answer
    x = 9,339.61

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Half scale
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Double scale
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Similar ratio
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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.