Home / 13,382.76-18,467.64-8,076.36

Finding the Fourth Proportional to 13,382.76, 18,467.64 and 8,076.36

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Solution

The fourth proportional to 13,382.76, 18,467.64 and 8,076.36 is: 11,145.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,382.76 : 18,467.64 = 8,076.36 : x
  2. Step 2: Convert to fraction form
    13,382.76/18,467.64 = 8,076.36/x
  3. Step 3: Cross multiply
    13,382.76x = 18,467.64 × 8,076.36
  4. Step 4: Simplify right side
    13,382.76x = 149,151,308.99
  5. Step 5: Solve for x
    x = 149,151,308.99/13,382.76
  6. Step 6: Final answer
    x = 11,145.03

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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.