Home / 13,399.24-18,491.09-7,431.01

Finding the Fourth Proportional to 13,399.24, 18,491.09 and 7,431.01

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Solution

The fourth proportional to 13,399.24, 18,491.09 and 7,431.01 is: 10,254.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.24 : 18,491.09 = 7,431.01 : x
  2. Step 2: Convert to fraction form
    13,399.24/18,491.09 = 7,431.01/x
  3. Step 3: Cross multiply
    13,399.24x = 18,491.09 × 7,431.01
  4. Step 4: Simplify right side
    13,399.24x = 137,407,391.32
  5. Step 5: Solve for x
    x = 137,407,391.32/13,399.24
  6. Step 6: Final answer
    x = 10,254.87

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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.