Home / 12,872.36-19,307.46-8,738.94

Finding the Fourth Proportional to 12,872.36, 19,307.46 and 8,738.94

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Solution

The fourth proportional to 12,872.36, 19,307.46 and 8,738.94 is: 13,107.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872.36 : 19,307.46 = 8,738.94 : x
  2. Step 2: Convert to fraction form
    12,872.36/19,307.46 = 8,738.94/x
  3. Step 3: Cross multiply
    12,872.36x = 19,307.46 × 8,738.94
  4. Step 4: Simplify right side
    12,872.36x = 168,726,734.49
  5. Step 5: Solve for x
    x = 168,726,734.49/12,872.36
  6. Step 6: Final answer
    x = 13,107.68

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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.