Home / 11,409.21-15,750.41-7,166.43

Finding the Fourth Proportional to 11,409.21, 15,750.41 and 7,166.43

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Solution

The fourth proportional to 11,409.21, 15,750.41 and 7,166.43 is: 9,893.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,409.21 : 15,750.41 = 7,166.43 : x
  2. Step 2: Convert to fraction form
    11,409.21/15,750.41 = 7,166.43/x
  3. Step 3: Cross multiply
    11,409.21x = 15,750.41 × 7,166.43
  4. Step 4: Simplify right side
    11,409.21x = 112,874,174.90
  5. Step 5: Solve for x
    x = 112,874,174.90/11,409.21
  6. Step 6: Final answer
    x = 9,893.25

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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.