Home / 13,181.92-18,190.88-7,213.52

Finding the Fourth Proportional to 13,181.92, 18,190.88 and 7,213.52

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Solution

The fourth proportional to 13,181.92, 18,190.88 and 7,213.52 is: 9,954.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.92 : 18,190.88 = 7,213.52 : x
  2. Step 2: Convert to fraction form
    13,181.92/18,190.88 = 7,213.52/x
  3. Step 3: Cross multiply
    13,181.92x = 18,190.88 × 7,213.52
  4. Step 4: Simplify right side
    13,181.92x = 131,220,276.70
  5. Step 5: Solve for x
    x = 131,220,276.70/13,181.92
  6. Step 6: Final answer
    x = 9,954.56

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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.