Home / 12,686.70-19,029.60-3,326.65

Finding the Fourth Proportional to 12,686.70, 19,029.60 and 3,326.65

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Solution

The fourth proportional to 12,686.70, 19,029.60 and 3,326.65 is: 4,989.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686.70 : 19,029.60 = 3,326.65 : x
  2. Step 2: Convert to fraction form
    12,686.70/19,029.60 = 3,326.65/x
  3. Step 3: Cross multiply
    12,686.70x = 19,029.60 × 3,326.65
  4. Step 4: Simplify right side
    12,686.70x = 63,304,771.27
  5. Step 5: Solve for x
    x = 63,304,771.27/12,686.70
  6. Step 6: Final answer
    x = 4,989.85

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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.