Home / 13,419.36-18,514.88-8,110.32

Finding the Fourth Proportional to 13,419.36, 18,514.88 and 8,110.32

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Solution

The fourth proportional to 13,419.36, 18,514.88 and 8,110.32 is: 11,189.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.36 : 18,514.88 = 8,110.32 : x
  2. Step 2: Convert to fraction form
    13,419.36/18,514.88 = 8,110.32/x
  3. Step 3: Cross multiply
    13,419.36x = 18,514.88 × 8,110.32
  4. Step 4: Simplify right side
    13,419.36x = 150,161,601.56
  5. Step 5: Solve for x
    x = 150,161,601.56/13,419.36
  6. Step 6: Final answer
    x = 11,189.92

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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.