Home / 13,181.52-18,190.98-7,213.44

Finding the Fourth Proportional to 13,181.52, 18,190.98 and 7,213.44

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Solution

The fourth proportional to 13,181.52, 18,190.98 and 7,213.44 is: 9,954.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.52 : 18,190.98 = 7,213.44 : x
  2. Step 2: Convert to fraction form
    13,181.52/18,190.98 = 7,213.44/x
  3. Step 3: Cross multiply
    13,181.52x = 18,190.98 × 7,213.44
  4. Step 4: Simplify right side
    13,181.52x = 131,219,542.77
  5. Step 5: Solve for x
    x = 131,219,542.77/13,181.52
  6. Step 6: Final answer
    x = 9,954.81

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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.