Home / 28,679.81-43,021.61-7,619.56

Finding the Fourth Proportional to 28,679.81, 43,021.61 and 7,619.56

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Solution

The fourth proportional to 28,679.81, 43,021.61 and 7,619.56 is: 11,429.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,679.81 : 43,021.61 = 7,619.56 : x
  2. Step 2: Convert to fraction form
    28,679.81/43,021.61 = 7,619.56/x
  3. Step 3: Cross multiply
    28,679.81x = 43,021.61 × 7,619.56
  4. Step 4: Simplify right side
    28,679.81x = 327,805,738.69
  5. Step 5: Solve for x
    x = 327,805,738.69/28,679.81
  6. Step 6: Final answer
    x = 11,429.84

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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.