Home / 13,815.60-20,732.48-7,579.98

Finding the Fourth Proportional to 13,815.60, 20,732.48 and 7,579.98

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Solution

The fourth proportional to 13,815.60, 20,732.48 and 7,579.98 is: 11,374.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.60 : 20,732.48 = 7,579.98 : x
  2. Step 2: Convert to fraction form
    13,815.60/20,732.48 = 7,579.98/x
  3. Step 3: Cross multiply
    13,815.60x = 20,732.48 × 7,579.98
  4. Step 4: Simplify right side
    13,815.60x = 157,151,745.85
  5. Step 5: Solve for x
    x = 157,151,745.85/13,815.60
  6. Step 6: Final answer
    x = 11,374.95

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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.