Home / 12,078.06-16,667.80-6,772.96

Finding the Fourth Proportional to 12,078.06, 16,667.80 and 6,772.96

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Solution

The fourth proportional to 12,078.06, 16,667.80 and 6,772.96 is: 9,346.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.06 : 16,667.80 = 6,772.96 : x
  2. Step 2: Convert to fraction form
    12,078.06/16,667.80 = 6,772.96/x
  3. Step 3: Cross multiply
    12,078.06x = 16,667.80 × 6,772.96
  4. Step 4: Simplify right side
    12,078.06x = 112,890,342.69
  5. Step 5: Solve for x
    x = 112,890,342.69/12,078.06
  6. Step 6: Final answer
    x = 9,346.73

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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.