Home / 12,857.09-19,289.28-4,092.69

Finding the Fourth Proportional to 12,857.09, 19,289.28 and 4,092.69

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Solution

The fourth proportional to 12,857.09, 19,289.28 and 4,092.69 is: 6,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.09 : 19,289.28 = 4,092.69 : x
  2. Step 2: Convert to fraction form
    12,857.09/19,289.28 = 4,092.69/x
  3. Step 3: Cross multiply
    12,857.09x = 19,289.28 × 4,092.69
  4. Step 4: Simplify right side
    12,857.09x = 78,945,043.36
  5. Step 5: Solve for x
    x = 78,945,043.36/12,857.09
  6. Step 6: Final answer
    x = 6,140.20

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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.