Home / 21,027.09-29,007.81-13,958.22

Finding the Fourth Proportional to 21,027.09, 29,007.81 and 13,958.22

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Solution

The fourth proportional to 21,027.09, 29,007.81 and 13,958.22 is: 19,255.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027.09 : 29,007.81 = 13,958.22 : x
  2. Step 2: Convert to fraction form
    21,027.09/29,007.81 = 13,958.22/x
  3. Step 3: Cross multiply
    21,027.09x = 29,007.81 × 13,958.22
  4. Step 4: Simplify right side
    21,027.09x = 404,897,393.70
  5. Step 5: Solve for x
    x = 404,897,393.70/21,027.09
  6. Step 6: Final answer
    x = 19,255.99

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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.