Home / 30,418.05-41,976.47-16,989.50

Finding the Fourth Proportional to 30,418.05, 41,976.47 and 16,989.50

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Solution

The fourth proportional to 30,418.05, 41,976.47 and 16,989.50 is: 23,445.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,418.05 : 41,976.47 = 16,989.50 : x
  2. Step 2: Convert to fraction form
    30,418.05/41,976.47 = 16,989.50/x
  3. Step 3: Cross multiply
    30,418.05x = 41,976.47 × 16,989.50
  4. Step 4: Simplify right side
    30,418.05x = 713,158,942.24
  5. Step 5: Solve for x
    x = 713,158,942.24/30,418.05
  6. Step 6: Final answer
    x = 23,445.26

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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.