Home / 13,830.72-20,743.01-3,970.77

Finding the Fourth Proportional to 13,830.72, 20,743.01 and 3,970.77

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Solution

The fourth proportional to 13,830.72, 20,743.01 and 3,970.77 is: 5,955.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.72 : 20,743.01 = 3,970.77 : x
  2. Step 2: Convert to fraction form
    13,830.72/20,743.01 = 3,970.77/x
  3. Step 3: Cross multiply
    13,830.72x = 20,743.01 × 3,970.77
  4. Step 4: Simplify right side
    13,830.72x = 82,365,766.92
  5. Step 5: Solve for x
    x = 82,365,766.92/13,830.72
  6. Step 6: Final answer
    x = 5,955.27

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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.