Home / 20,192.48-30,268.21-12,782.65

Finding the Fourth Proportional to 20,192.48, 30,268.21 and 12,782.65

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Solution

The fourth proportional to 20,192.48, 30,268.21 and 12,782.65 is: 19,160.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,192.48 : 30,268.21 = 12,782.65 : x
  2. Step 2: Convert to fraction form
    20,192.48/30,268.21 = 12,782.65/x
  3. Step 3: Cross multiply
    20,192.48x = 30,268.21 × 12,782.65
  4. Step 4: Simplify right side
    20,192.48x = 386,907,934.56
  5. Step 5: Solve for x
    x = 386,907,934.56/20,192.48
  6. Step 6: Final answer
    x = 19,160.99

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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.