Home / 12,908.88-19,360.99-3,421.26

Finding the Fourth Proportional to 12,908.88, 19,360.99 and 3,421.26

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Solution

The fourth proportional to 12,908.88, 19,360.99 and 3,421.26 is: 5,131.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.88 : 19,360.99 = 3,421.26 : x
  2. Step 2: Convert to fraction form
    12,908.88/19,360.99 = 3,421.26/x
  3. Step 3: Cross multiply
    12,908.88x = 19,360.99 × 3,421.26
  4. Step 4: Simplify right side
    12,908.88x = 66,238,980.65
  5. Step 5: Solve for x
    x = 66,238,980.65/12,908.88
  6. Step 6: Final answer
    x = 5,131.27

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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.