Home / 12,975.65-19,469.61-7,721.04

Finding the Fourth Proportional to 12,975.65, 19,469.61 and 7,721.04

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Solution

The fourth proportional to 12,975.65, 19,469.61 and 7,721.04 is: 11,585.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,975.65 : 19,469.61 = 7,721.04 : x
  2. Step 2: Convert to fraction form
    12,975.65/19,469.61 = 7,721.04/x
  3. Step 3: Cross multiply
    12,975.65x = 19,469.61 × 7,721.04
  4. Step 4: Simplify right side
    12,975.65x = 150,325,637.59
  5. Step 5: Solve for x
    x = 150,325,637.59/12,975.65
  6. Step 6: Final answer
    x = 11,585.22

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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.