Home / 12,908.86-19,361.46-4,142.62

Finding the Fourth Proportional to 12,908.86, 19,361.46 and 4,142.62

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Solution

The fourth proportional to 12,908.86, 19,361.46 and 4,142.62 is: 6,213.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.86 : 19,361.46 = 4,142.62 : x
  2. Step 2: Convert to fraction form
    12,908.86/19,361.46 = 4,142.62/x
  3. Step 3: Cross multiply
    12,908.86x = 19,361.46 × 4,142.62
  4. Step 4: Simplify right side
    12,908.86x = 80,207,171.43
  5. Step 5: Solve for x
    x = 80,207,171.43/12,908.86
  6. Step 6: Final answer
    x = 6,213.34

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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.