Home / 13,186.72-18,189.48-8,152.48

Finding the Fourth Proportional to 13,186.72, 18,189.48 and 8,152.48

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Solution

The fourth proportional to 13,186.72, 18,189.48 and 8,152.48 is: 11,245.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.72 : 18,189.48 = 8,152.48 : x
  2. Step 2: Convert to fraction form
    13,186.72/18,189.48 = 8,152.48/x
  3. Step 3: Cross multiply
    13,186.72x = 18,189.48 × 8,152.48
  4. Step 4: Simplify right side
    13,186.72x = 148,289,371.91
  5. Step 5: Solve for x
    x = 148,289,371.91/13,186.72
  6. Step 6: Final answer
    x = 11,245.36

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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.