Home / 30,418.12-41,976.92-16,989.38

Finding the Fourth Proportional to 30,418.12, 41,976.92 and 16,989.38

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Solution

The fourth proportional to 30,418.12, 41,976.92 and 16,989.38 is: 23,445.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,418.12 : 41,976.92 = 16,989.38 : x
  2. Step 2: Convert to fraction form
    30,418.12/41,976.92 = 16,989.38/x
  3. Step 3: Cross multiply
    30,418.12x = 41,976.92 × 16,989.38
  4. Step 4: Simplify right side
    30,418.12x = 713,161,865.10
  5. Step 5: Solve for x
    x = 713,161,865.10/30,418.12
  6. Step 6: Final answer
    x = 23,445.30

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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.