Home / 12,928.73-19,390.37-5,906.75

Finding the Fourth Proportional to 12,928.73, 19,390.37 and 5,906.75

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Solution

The fourth proportional to 12,928.73, 19,390.37 and 5,906.75 is: 8,858.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.73 : 19,390.37 = 5,906.75 : x
  2. Step 2: Convert to fraction form
    12,928.73/19,390.37 = 5,906.75/x
  3. Step 3: Cross multiply
    12,928.73x = 19,390.37 × 5,906.75
  4. Step 4: Simplify right side
    12,928.73x = 114,533,941.51
  5. Step 5: Solve for x
    x = 114,533,941.51/12,928.73
  6. Step 6: Final answer
    x = 8,858.87

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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.