Home / 21,350.04-29,439.09-13,786.44

Finding the Fourth Proportional to 21,350.04, 29,439.09 and 13,786.44

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Solution

The fourth proportional to 21,350.04, 29,439.09 and 13,786.44 is: 19,009.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,350.04 : 29,439.09 = 13,786.44 : x
  2. Step 2: Convert to fraction form
    21,350.04/29,439.09 = 13,786.44/x
  3. Step 3: Cross multiply
    21,350.04x = 29,439.09 × 13,786.44
  4. Step 4: Simplify right side
    21,350.04x = 405,860,247.94
  5. Step 5: Solve for x
    x = 405,860,247.94/21,350.04
  6. Step 6: Final answer
    x = 19,009.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.