Home / 12,622.30-18,936.23-3,857.90

Finding the Fourth Proportional to 12,622.30, 18,936.23 and 3,857.90

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Solution

The fourth proportional to 12,622.30, 18,936.23 and 3,857.90 is: 5,787.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.30 : 18,936.23 = 3,857.90 : x
  2. Step 2: Convert to fraction form
    12,622.30/18,936.23 = 3,857.90/x
  3. Step 3: Cross multiply
    12,622.30x = 18,936.23 × 3,857.90
  4. Step 4: Simplify right side
    12,622.30x = 73,053,967.75
  5. Step 5: Solve for x
    x = 73,053,967.75/12,622.30
  6. Step 6: Final answer
    x = 5,787.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.