Home / 12,739.65-19,081.80-7,794.27

Finding the Fourth Proportional to 12,739.65, 19,081.80 and 7,794.27

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Solution

The fourth proportional to 12,739.65, 19,081.80 and 7,794.27 is: 11,674.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.65 : 19,081.80 = 7,794.27 : x
  2. Step 2: Convert to fraction form
    12,739.65/19,081.80 = 7,794.27/x
  3. Step 3: Cross multiply
    12,739.65x = 19,081.80 × 7,794.27
  4. Step 4: Simplify right side
    12,739.65x = 148,728,701.29
  5. Step 5: Solve for x
    x = 148,728,701.29/12,739.65
  6. Step 6: Final answer
    x = 11,674.47

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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.