Home / 13,220.01-19,829.88-3,986.01

Finding the Fourth Proportional to 13,220.01, 19,829.88 and 3,986.01

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Solution

The fourth proportional to 13,220.01, 19,829.88 and 3,986.01 is: 5,978.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.01 : 19,829.88 = 3,986.01 : x
  2. Step 2: Convert to fraction form
    13,220.01/19,829.88 = 3,986.01/x
  3. Step 3: Cross multiply
    13,220.01x = 19,829.88 × 3,986.01
  4. Step 4: Simplify right side
    13,220.01x = 79,042,099.98
  5. Step 5: Solve for x
    x = 79,042,099.98/13,220.01
  6. Step 6: Final answer
    x = 5,978.97

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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.