Home / 20,161.64-30,243.42-9,782.12

Finding the Fourth Proportional to 20,161.64, 30,243.42 and 9,782.12

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Solution

The fourth proportional to 20,161.64, 30,243.42 and 9,782.12 is: 14,673.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.64 : 30,243.42 = 9,782.12 : x
  2. Step 2: Convert to fraction form
    20,161.64/30,243.42 = 9,782.12/x
  3. Step 3: Cross multiply
    20,161.64x = 30,243.42 × 9,782.12
  4. Step 4: Simplify right side
    20,161.64x = 295,844,763.65
  5. Step 5: Solve for x
    x = 295,844,763.65/20,161.64
  6. Step 6: Final answer
    x = 14,673.65

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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.