Home / 13,183.49-18,190.31-7,516.63

Finding the Fourth Proportional to 13,183.49, 18,190.31 and 7,516.63

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Solution

The fourth proportional to 13,183.49, 18,190.31 and 7,516.63 is: 10,371.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.49 : 18,190.31 = 7,516.63 : x
  2. Step 2: Convert to fraction form
    13,183.49/18,190.31 = 7,516.63/x
  3. Step 3: Cross multiply
    13,183.49x = 18,190.31 × 7,516.63
  4. Step 4: Simplify right side
    13,183.49x = 136,729,803.17
  5. Step 5: Solve for x
    x = 136,729,803.17/13,183.49
  6. Step 6: Final answer
    x = 10,371.29

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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.