Home / 18,610.24-27,907.80-12,078.40

Finding the Fourth Proportional to 18,610.24, 27,907.80 and 12,078.40

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Solution

The fourth proportional to 18,610.24, 27,907.80 and 12,078.40 is: 18,112.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.24 : 27,907.80 = 12,078.40 : x
  2. Step 2: Convert to fraction form
    18,610.24/27,907.80 = 12,078.40/x
  3. Step 3: Cross multiply
    18,610.24x = 27,907.80 × 12,078.40
  4. Step 4: Simplify right side
    18,610.24x = 337,081,571.52
  5. Step 5: Solve for x
    x = 337,081,571.52/18,610.24
  6. Step 6: Final answer
    x = 18,112.69

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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.