Home / 13,287.68-19,933.67-3,928.64

Finding the Fourth Proportional to 13,287.68, 19,933.67 and 3,928.64

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Solution

The fourth proportional to 13,287.68, 19,933.67 and 3,928.64 is: 5,893.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.68 : 19,933.67 = 3,928.64 : x
  2. Step 2: Convert to fraction form
    13,287.68/19,933.67 = 3,928.64/x
  3. Step 3: Cross multiply
    13,287.68x = 19,933.67 × 3,928.64
  4. Step 4: Simplify right side
    13,287.68x = 78,312,094.00
  5. Step 5: Solve for x
    x = 78,312,094.00/13,287.68
  6. Step 6: Final answer
    x = 5,893.59

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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.