Home / 19,703.21-27,190.43-12,629.64

Finding the Fourth Proportional to 19,703.21, 27,190.43 and 12,629.64

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Solution

The fourth proportional to 19,703.21, 27,190.43 and 12,629.64 is: 17,428.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,703.21 : 27,190.43 = 12,629.64 : x
  2. Step 2: Convert to fraction form
    19,703.21/27,190.43 = 12,629.64/x
  3. Step 3: Cross multiply
    19,703.21x = 27,190.43 × 12,629.64
  4. Step 4: Simplify right side
    19,703.21x = 343,405,381.16
  5. Step 5: Solve for x
    x = 343,405,381.16/19,703.21
  6. Step 6: Final answer
    x = 17,428.91

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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.