Home / 13,719.44-18,932.16-7,668.64

Finding the Fourth Proportional to 13,719.44, 18,932.16 and 7,668.64

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Solution

The fourth proportional to 13,719.44, 18,932.16 and 7,668.64 is: 10,582.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.44 : 18,932.16 = 7,668.64 : x
  2. Step 2: Convert to fraction form
    13,719.44/18,932.16 = 7,668.64/x
  3. Step 3: Cross multiply
    13,719.44x = 18,932.16 × 7,668.64
  4. Step 4: Simplify right side
    13,719.44x = 145,183,919.46
  5. Step 5: Solve for x
    x = 145,183,919.46/13,719.44
  6. Step 6: Final answer
    x = 10,582.35

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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.