Home / 28,620.43-42,938.44-13,829.36

Finding the Fourth Proportional to 28,620.43, 42,938.44 and 13,829.36

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Solution

The fourth proportional to 28,620.43, 42,938.44 and 13,829.36 is: 20,747.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,620.43 : 42,938.44 = 13,829.36 : x
  2. Step 2: Convert to fraction form
    28,620.43/42,938.44 = 13,829.36/x
  3. Step 3: Cross multiply
    28,620.43x = 42,938.44 × 13,829.36
  4. Step 4: Simplify right side
    28,620.43x = 593,811,074.44
  5. Step 5: Solve for x
    x = 593,811,074.44/28,620.43
  6. Step 6: Final answer
    x = 20,747.81

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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.