Home / 12,107.48-18,161.21-3,787.56

Finding the Fourth Proportional to 12,107.48, 18,161.21 and 3,787.56

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Solution

The fourth proportional to 12,107.48, 18,161.21 and 3,787.56 is: 5,681.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.48 : 18,161.21 = 3,787.56 : x
  2. Step 2: Convert to fraction form
    12,107.48/18,161.21 = 3,787.56/x
  3. Step 3: Cross multiply
    12,107.48x = 18,161.21 × 3,787.56
  4. Step 4: Simplify right side
    12,107.48x = 68,786,682.02
  5. Step 5: Solve for x
    x = 68,786,682.02/12,107.48
  6. Step 6: Final answer
    x = 5,681.34

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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.