Home / 12,939.23-19,406.72-4,173

Finding the Fourth Proportional to 12,939.23, 19,406.72 and 4,173

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Solution

The fourth proportional to 12,939.23, 19,406.72 and 4,173 is: 6,258.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.23 : 19,406.72 = 4,173 : x
  2. Step 2: Convert to fraction form
    12,939.23/19,406.72 = 4,173/x
  3. Step 3: Cross multiply
    12,939.23x = 19,406.72 × 4,173
  4. Step 4: Simplify right side
    12,939.23x = 80,984,221.70
  5. Step 5: Solve for x
    x = 80,984,221.70/12,939.23
  6. Step 6: Final answer
    x = 6,258.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.