Home / 30,419.88-41,976.70-16,989.27

Finding the Fourth Proportional to 30,419.88, 41,976.70 and 16,989.27

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Solution

The fourth proportional to 30,419.88, 41,976.70 and 16,989.27 is: 23,443.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,419.88 : 41,976.70 = 16,989.27 : x
  2. Step 2: Convert to fraction form
    30,419.88/41,976.70 = 16,989.27/x
  3. Step 3: Cross multiply
    30,419.88x = 41,976.70 × 16,989.27
  4. Step 4: Simplify right side
    30,419.88x = 713,153,447.54
  5. Step 5: Solve for x
    x = 713,153,447.54/30,419.88
  6. Step 6: Final answer
    x = 23,443.66

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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.