Home / 11,140.45-15,372.35-6,662.56

Finding the Fourth Proportional to 11,140.45, 15,372.35 and 6,662.56

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Solution

The fourth proportional to 11,140.45, 15,372.35 and 6,662.56 is: 9,193.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,140.45 : 15,372.35 = 6,662.56 : x
  2. Step 2: Convert to fraction form
    11,140.45/15,372.35 = 6,662.56/x
  3. Step 3: Cross multiply
    11,140.45x = 15,372.35 × 6,662.56
  4. Step 4: Simplify right side
    11,140.45x = 102,419,204.22
  5. Step 5: Solve for x
    x = 102,419,204.22/11,140.45
  6. Step 6: Final answer
    x = 9,193.45

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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.