Home / 30,419.63-41,976.35-16,989.02

Finding the Fourth Proportional to 30,419.63, 41,976.35 and 16,989.02

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Solution

The fourth proportional to 30,419.63, 41,976.35 and 16,989.02 is: 23,443.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,419.63 : 41,976.35 = 16,989.02 : x
  2. Step 2: Convert to fraction form
    30,419.63/41,976.35 = 16,989.02/x
  3. Step 3: Cross multiply
    30,419.63x = 41,976.35 × 16,989.02
  4. Step 4: Simplify right side
    30,419.63x = 713,137,049.68
  5. Step 5: Solve for x
    x = 713,137,049.68/30,419.63
  6. Step 6: Final answer
    x = 23,443.32

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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.