Home / 13,183.68-18,192.55-7,215.23

Finding the Fourth Proportional to 13,183.68, 18,192.55 and 7,215.23

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Solution

The fourth proportional to 13,183.68, 18,192.55 and 7,215.23 is: 9,956.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.68 : 18,192.55 = 7,215.23 : x
  2. Step 2: Convert to fraction form
    13,183.68/18,192.55 = 7,215.23/x
  3. Step 3: Cross multiply
    13,183.68x = 18,192.55 × 7,215.23
  4. Step 4: Simplify right side
    13,183.68x = 131,263,371.18
  5. Step 5: Solve for x
    x = 131,263,371.18/13,183.68
  6. Step 6: Final answer
    x = 9,956.51

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Double scale
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Similar ratio
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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.