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Finding the Fourth Proportional to 13,245.53, 19,868.31 and 5,448.89

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Solution

The fourth proportional to 13,245.53, 19,868.31 and 5,448.89 is: 8,173.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.53 : 19,868.31 = 5,448.89 : x
  2. Step 2: Convert to fraction form
    13,245.53/19,868.31 = 5,448.89/x
  3. Step 3: Cross multiply
    13,245.53x = 19,868.31 × 5,448.89
  4. Step 4: Simplify right side
    13,245.53x = 108,260,235.68
  5. Step 5: Solve for x
    x = 108,260,235.68/13,245.53
  6. Step 6: Final answer
    x = 8,173.34

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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.