Home / 12,858.06-19,286.87-4,092.87

Finding the Fourth Proportional to 12,858.06, 19,286.87 and 4,092.87

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Solution

The fourth proportional to 12,858.06, 19,286.87 and 4,092.87 is: 6,139.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.06 : 19,286.87 = 4,092.87 : x
  2. Step 2: Convert to fraction form
    12,858.06/19,286.87 = 4,092.87/x
  3. Step 3: Cross multiply
    12,858.06x = 19,286.87 × 4,092.87
  4. Step 4: Simplify right side
    12,858.06x = 78,938,631.15
  5. Step 5: Solve for x
    x = 78,938,631.15/12,858.06
  6. Step 6: Final answer
    x = 6,139.23

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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.