Home / 28,747.89-43,121.84-13,119.09

Finding the Fourth Proportional to 28,747.89, 43,121.84 and 13,119.09

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Solution

The fourth proportional to 28,747.89, 43,121.84 and 13,119.09 is: 19,678.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,747.89 : 43,121.84 = 13,119.09 : x
  2. Step 2: Convert to fraction form
    28,747.89/43,121.84 = 13,119.09/x
  3. Step 3: Cross multiply
    28,747.89x = 43,121.84 × 13,119.09
  4. Step 4: Simplify right side
    28,747.89x = 565,719,234.33
  5. Step 5: Solve for x
    x = 565,719,234.33/28,747.89
  6. Step 6: Final answer
    x = 19,678.64

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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.