Home / 22,380.30-30,884.80-12,308.90

Finding the Fourth Proportional to 22,380.30, 30,884.80 and 12,308.90

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Solution

The fourth proportional to 22,380.30, 30,884.80 and 12,308.90 is: 16,986.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,380.30 : 30,884.80 = 12,308.90 : x
  2. Step 2: Convert to fraction form
    22,380.30/30,884.80 = 12,308.90/x
  3. Step 3: Cross multiply
    22,380.30x = 30,884.80 × 12,308.90
  4. Step 4: Simplify right side
    22,380.30x = 380,157,914.72
  5. Step 5: Solve for x
    x = 380,157,914.72/22,380.30
  6. Step 6: Final answer
    x = 16,986.27

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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.