Home / 30,120.87-41,569.64-18,194.03

Finding the Fourth Proportional to 30,120.87, 41,569.64 and 18,194.03

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Solution

The fourth proportional to 30,120.87, 41,569.64 and 18,194.03 is: 25,109.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,120.87 : 41,569.64 = 18,194.03 : x
  2. Step 2: Convert to fraction form
    30,120.87/41,569.64 = 18,194.03/x
  3. Step 3: Cross multiply
    30,120.87x = 41,569.64 × 18,194.03
  4. Step 4: Simplify right side
    30,120.87x = 756,319,277.25
  5. Step 5: Solve for x
    x = 756,319,277.25/30,120.87
  6. Step 6: Final answer
    x = 25,109.48

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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.