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Finding the Fourth Proportional to 12,858.67, 17,745.11 and 7,553.58

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Solution

The fourth proportional to 12,858.67, 17,745.11 and 7,553.58 is: 10,424.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.67 : 17,745.11 = 7,553.58 : x
  2. Step 2: Convert to fraction form
    12,858.67/17,745.11 = 7,553.58/x
  3. Step 3: Cross multiply
    12,858.67x = 17,745.11 × 7,553.58
  4. Step 4: Simplify right side
    12,858.67x = 134,039,107.99
  5. Step 5: Solve for x
    x = 134,039,107.99/12,858.67
  6. Step 6: Final answer
    x = 10,424.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.