Home / 12,857.94-19,285.62-9,125.64

Finding the Fourth Proportional to 12,857.94, 19,285.62 and 9,125.64

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Solution

The fourth proportional to 12,857.94, 19,285.62 and 9,125.64 is: 13,687.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.94 : 19,285.62 = 9,125.64 : x
  2. Step 2: Convert to fraction form
    12,857.94/19,285.62 = 9,125.64/x
  3. Step 3: Cross multiply
    12,857.94x = 19,285.62 × 9,125.64
  4. Step 4: Simplify right side
    12,857.94x = 175,993,625.30
  5. Step 5: Solve for x
    x = 175,993,625.30/12,857.94
  6. Step 6: Final answer
    x = 13,687.54

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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.