Home / 30,138.66-41,610.87-19,388.34

Finding the Fourth Proportional to 30,138.66, 41,610.87 and 19,388.34

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Solution

The fourth proportional to 30,138.66, 41,610.87 and 19,388.34 is: 26,768.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,138.66 : 41,610.87 = 19,388.34 : x
  2. Step 2: Convert to fraction form
    30,138.66/41,610.87 = 19,388.34/x
  3. Step 3: Cross multiply
    30,138.66x = 41,610.87 × 19,388.34
  4. Step 4: Simplify right side
    30,138.66x = 806,765,695.26
  5. Step 5: Solve for x
    x = 806,765,695.26/30,138.66
  6. Step 6: Final answer
    x = 26,768.47

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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.