Home / 12,684.20-19,029.47-4,786.70

Finding the Fourth Proportional to 12,684.20, 19,029.47 and 4,786.70

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Solution

The fourth proportional to 12,684.20, 19,029.47 and 4,786.70 is: 7,181.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,684.20 : 19,029.47 = 4,786.70 : x
  2. Step 2: Convert to fraction form
    12,684.20/19,029.47 = 4,786.70/x
  3. Step 3: Cross multiply
    12,684.20x = 19,029.47 × 4,786.70
  4. Step 4: Simplify right side
    12,684.20x = 91,088,244.97
  5. Step 5: Solve for x
    x = 91,088,244.97/12,684.20
  6. Step 6: Final answer
    x = 7,181.24

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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.