Home / 18,945.99-28,422.36-7,846.70

Finding the Fourth Proportional to 18,945.99, 28,422.36 and 7,846.70

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Solution

The fourth proportional to 18,945.99, 28,422.36 and 7,846.70 is: 11,771.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.99 : 28,422.36 = 7,846.70 : x
  2. Step 2: Convert to fraction form
    18,945.99/28,422.36 = 7,846.70/x
  3. Step 3: Cross multiply
    18,945.99x = 28,422.36 × 7,846.70
  4. Step 4: Simplify right side
    18,945.99x = 223,021,590.10
  5. Step 5: Solve for x
    x = 223,021,590.10/18,945.99
  6. Step 6: Final answer
    x = 11,771.44

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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.