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Finding the Fourth Proportional to 13,940.96, 20,907.02 and 4,579.44

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Solution

The fourth proportional to 13,940.96, 20,907.02 and 4,579.44 is: 6,867.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.96 : 20,907.02 = 4,579.44 : x
  2. Step 2: Convert to fraction form
    13,940.96/20,907.02 = 4,579.44/x
  3. Step 3: Cross multiply
    13,940.96x = 20,907.02 × 4,579.44
  4. Step 4: Simplify right side
    13,940.96x = 95,742,443.67
  5. Step 5: Solve for x
    x = 95,742,443.67/13,940.96
  6. Step 6: Final answer
    x = 6,867.71

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1.5x scale

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.