Home / 12,183.50-16,804.34-9,318.72

Finding the Fourth Proportional to 12,183.50, 16,804.34 and 9,318.72

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Solution

The fourth proportional to 12,183.50, 16,804.34 and 9,318.72 is: 12,853.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.50 : 16,804.34 = 9,318.72 : x
  2. Step 2: Convert to fraction form
    12,183.50/16,804.34 = 9,318.72/x
  3. Step 3: Cross multiply
    12,183.50x = 16,804.34 × 9,318.72
  4. Step 4: Simplify right side
    12,183.50x = 156,594,939.24
  5. Step 5: Solve for x
    x = 156,594,939.24/12,183.50
  6. Step 6: Final answer
    x = 12,853.03

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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.