Home / 13,686.08-18,885.84-8,096

Finding the Fourth Proportional to 13,686.08, 18,885.84 and 8,096

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Solution

The fourth proportional to 13,686.08, 18,885.84 and 8,096 is: 11,171.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.08 : 18,885.84 = 8,096 : x
  2. Step 2: Convert to fraction form
    13,686.08/18,885.84 = 8,096/x
  3. Step 3: Cross multiply
    13,686.08x = 18,885.84 × 8,096
  4. Step 4: Simplify right side
    13,686.08x = 152,899,760.64
  5. Step 5: Solve for x
    x = 152,899,760.64/13,686.08
  6. Step 6: Final answer
    x = 11,171.92

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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.