Home / 12,072.08-16,660.80-6,768.32

Finding the Fourth Proportional to 12,072.08, 16,660.80 and 6,768.32

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Solution

The fourth proportional to 12,072.08, 16,660.80 and 6,768.32 is: 9,341.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072.08 : 16,660.80 = 6,768.32 : x
  2. Step 2: Convert to fraction form
    12,072.08/16,660.80 = 6,768.32/x
  3. Step 3: Cross multiply
    12,072.08x = 16,660.80 × 6,768.32
  4. Step 4: Simplify right side
    12,072.08x = 112,765,625.86
  5. Step 5: Solve for x
    x = 112,765,625.86/12,072.08
  6. Step 6: Final answer
    x = 9,341.03

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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.