Home / 30,388.20-41,930.37-16,958.40

Finding the Fourth Proportional to 30,388.20, 41,930.37 and 16,958.40

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Solution

The fourth proportional to 30,388.20, 41,930.37 and 16,958.40 is: 23,399.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,388.20 : 41,930.37 = 16,958.40 : x
  2. Step 2: Convert to fraction form
    30,388.20/41,930.37 = 16,958.40/x
  3. Step 3: Cross multiply
    30,388.20x = 41,930.37 × 16,958.40
  4. Step 4: Simplify right side
    30,388.20x = 711,071,986.61
  5. Step 5: Solve for x
    x = 711,071,986.61/30,388.20
  6. Step 6: Final answer
    x = 23,399.61

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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.