Home / 21,579.93-29,783.03-13,083.44

Finding the Fourth Proportional to 21,579.93, 29,783.03 and 13,083.44

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Solution

The fourth proportional to 21,579.93, 29,783.03 and 13,083.44 is: 18,056.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.93 : 29,783.03 = 13,083.44 : x
  2. Step 2: Convert to fraction form
    21,579.93/29,783.03 = 13,083.44/x
  3. Step 3: Cross multiply
    21,579.93x = 29,783.03 × 13,083.44
  4. Step 4: Simplify right side
    21,579.93x = 389,664,271.69
  5. Step 5: Solve for x
    x = 389,664,271.69/21,579.93
  6. Step 6: Final answer
    x = 18,056.79

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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.