Home / 13,220.55-19,832.04-3,860.64

Finding the Fourth Proportional to 13,220.55, 19,832.04 and 3,860.64

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Solution

The fourth proportional to 13,220.55, 19,832.04 and 3,860.64 is: 5,791.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.55 : 19,832.04 = 3,860.64 : x
  2. Step 2: Convert to fraction form
    13,220.55/19,832.04 = 3,860.64/x
  3. Step 3: Cross multiply
    13,220.55x = 19,832.04 × 3,860.64
  4. Step 4: Simplify right side
    13,220.55x = 76,564,366.91
  5. Step 5: Solve for x
    x = 76,564,366.91/13,220.55
  6. Step 6: Final answer
    x = 5,791.31

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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.