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Finding the Fourth Proportional to 11,408.31, 17,110.31 and 7,189.83

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Solution

The fourth proportional to 11,408.31, 17,110.31 and 7,189.83 is: 10,783.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,408.31 : 17,110.31 = 7,189.83 : x
  2. Step 2: Convert to fraction form
    11,408.31/17,110.31 = 7,189.83/x
  3. Step 3: Cross multiply
    11,408.31x = 17,110.31 × 7,189.83
  4. Step 4: Simplify right side
    11,408.31x = 123,020,184.20
  5. Step 5: Solve for x
    x = 123,020,184.20/11,408.31
  6. Step 6: Final answer
    x = 10,783.38

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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.