Home / 13,166.46-18,174.69-8,939.43

Finding the Fourth Proportional to 13,166.46, 18,174.69 and 8,939.43

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Solution

The fourth proportional to 13,166.46, 18,174.69 and 8,939.43 is: 12,339.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,166.46 : 18,174.69 = 8,939.43 : x
  2. Step 2: Convert to fraction form
    13,166.46/18,174.69 = 8,939.43/x
  3. Step 3: Cross multiply
    13,166.46x = 18,174.69 × 8,939.43
  4. Step 4: Simplify right side
    13,166.46x = 162,471,369.03
  5. Step 5: Solve for x
    x = 162,471,369.03/13,166.46
  6. Step 6: Final answer
    x = 12,339.79

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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.