Home / 21,138.44-29,104.58-17,945.42

Finding the Fourth Proportional to 21,138.44, 29,104.58 and 17,945.42

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Solution

The fourth proportional to 21,138.44, 29,104.58 and 17,945.42 is: 24,708.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,138.44 : 29,104.58 = 17,945.42 : x
  2. Step 2: Convert to fraction form
    21,138.44/29,104.58 = 17,945.42/x
  3. Step 3: Cross multiply
    21,138.44x = 29,104.58 × 17,945.42
  4. Step 4: Simplify right side
    21,138.44x = 522,293,811.36
  5. Step 5: Solve for x
    x = 522,293,811.36/21,138.44
  6. Step 6: Final answer
    x = 24,708.25

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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.