Home / 12,623.72-18,933.90-3,390.44

Finding the Fourth Proportional to 12,623.72, 18,933.90 and 3,390.44

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Solution

The fourth proportional to 12,623.72, 18,933.90 and 3,390.44 is: 5,085.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,623.72 : 18,933.90 = 3,390.44 : x
  2. Step 2: Convert to fraction form
    12,623.72/18,933.90 = 3,390.44/x
  3. Step 3: Cross multiply
    12,623.72x = 18,933.90 × 3,390.44
  4. Step 4: Simplify right side
    12,623.72x = 64,194,251.92
  5. Step 5: Solve for x
    x = 64,194,251.92/12,623.72
  6. Step 6: Final answer
    x = 5,085.21

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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.