Home / 19,845.65-27,372.56-13,137.03

Finding the Fourth Proportional to 19,845.65, 27,372.56 and 13,137.03

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Solution

The fourth proportional to 19,845.65, 27,372.56 and 13,137.03 is: 18,119.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,845.65 : 27,372.56 = 13,137.03 : x
  2. Step 2: Convert to fraction form
    19,845.65/27,372.56 = 13,137.03/x
  3. Step 3: Cross multiply
    19,845.65x = 27,372.56 × 13,137.03
  4. Step 4: Simplify right side
    19,845.65x = 359,594,076.21
  5. Step 5: Solve for x
    x = 359,594,076.21/19,845.65
  6. Step 6: Final answer
    x = 18,119.54

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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.