Home / 13,161.24-18,174.63-8,453.72

Finding the Fourth Proportional to 13,161.24, 18,174.63 and 8,453.72

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Solution

The fourth proportional to 13,161.24, 18,174.63 and 8,453.72 is: 11,673.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.24 : 18,174.63 = 8,453.72 : x
  2. Step 2: Convert to fraction form
    13,161.24/18,174.63 = 8,453.72/x
  3. Step 3: Cross multiply
    13,161.24x = 18,174.63 × 8,453.72
  4. Step 4: Simplify right side
    13,161.24x = 153,643,233.12
  5. Step 5: Solve for x
    x = 153,643,233.12/13,161.24
  6. Step 6: Final answer
    x = 11,673.92

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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.