Home / 20,102.06-30,153.09-11,839.65

Finding the Fourth Proportional to 20,102.06, 30,153.09 and 11,839.65

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Solution

The fourth proportional to 20,102.06, 30,153.09 and 11,839.65 is: 17,759.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.06 : 30,153.09 = 11,839.65 : x
  2. Step 2: Convert to fraction form
    20,102.06/30,153.09 = 11,839.65/x
  3. Step 3: Cross multiply
    20,102.06x = 30,153.09 × 11,839.65
  4. Step 4: Simplify right side
    20,102.06x = 357,002,032.02
  5. Step 5: Solve for x
    x = 357,002,032.02/20,102.06
  6. Step 6: Final answer
    x = 17,759.48

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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.