Home / 12,318.48-16,999.52-6,729.48

Finding the Fourth Proportional to 12,318.48, 16,999.52 and 6,729.48

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Solution

The fourth proportional to 12,318.48, 16,999.52 and 6,729.48 is: 9,286.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.48 : 16,999.52 = 6,729.48 : x
  2. Step 2: Convert to fraction form
    12,318.48/16,999.52 = 6,729.48/x
  3. Step 3: Cross multiply
    12,318.48x = 16,999.52 × 6,729.48
  4. Step 4: Simplify right side
    12,318.48x = 114,397,896.20
  5. Step 5: Solve for x
    x = 114,397,896.20/12,318.48
  6. Step 6: Final answer
    x = 9,286.69

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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.