Home / 13,772.42-19,005.66-8,107.76

Finding the Fourth Proportional to 13,772.42, 19,005.66 and 8,107.76

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Solution

The fourth proportional to 13,772.42, 19,005.66 and 8,107.76 is: 11,188.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.42 : 19,005.66 = 8,107.76 : x
  2. Step 2: Convert to fraction form
    13,772.42/19,005.66 = 8,107.76/x
  3. Step 3: Cross multiply
    13,772.42x = 19,005.66 × 8,107.76
  4. Step 4: Simplify right side
    13,772.42x = 154,093,329.92
  5. Step 5: Solve for x
    x = 154,093,329.92/13,772.42
  6. Step 6: Final answer
    x = 11,188.54

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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.