Home / 13,830.56-20,749.44-3,970.58

Finding the Fourth Proportional to 13,830.56, 20,749.44 and 3,970.58

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Solution

The fourth proportional to 13,830.56, 20,749.44 and 3,970.58 is: 5,956.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.56 : 20,749.44 = 3,970.58 : x
  2. Step 2: Convert to fraction form
    13,830.56/20,749.44 = 3,970.58/x
  3. Step 3: Cross multiply
    13,830.56x = 20,749.44 × 3,970.58
  4. Step 4: Simplify right side
    13,830.56x = 82,387,311.48
  5. Step 5: Solve for x
    x = 82,387,311.48/13,830.56
  6. Step 6: Final answer
    x = 5,956.90

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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.