Home / 20,351.87-28,058.01-17,399.42

Finding the Fourth Proportional to 20,351.87, 28,058.01 and 17,399.42

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Solution

The fourth proportional to 20,351.87, 28,058.01 and 17,399.42 is: 23,987.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.87 : 28,058.01 = 17,399.42 : x
  2. Step 2: Convert to fraction form
    20,351.87/28,058.01 = 17,399.42/x
  3. Step 3: Cross multiply
    20,351.87x = 28,058.01 × 17,399.42
  4. Step 4: Simplify right side
    20,351.87x = 488,193,100.35
  5. Step 5: Solve for x
    x = 488,193,100.35/20,351.87
  6. Step 6: Final answer
    x = 23,987.63

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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.