Home / 13,288.88-18,336.12-8,318

Finding the Fourth Proportional to 13,288.88, 18,336.12 and 8,318

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Solution

The fourth proportional to 13,288.88, 18,336.12 and 8,318 is: 11,477.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.88 : 18,336.12 = 8,318 : x
  2. Step 2: Convert to fraction form
    13,288.88/18,336.12 = 8,318/x
  3. Step 3: Cross multiply
    13,288.88x = 18,336.12 × 8,318
  4. Step 4: Simplify right side
    13,288.88x = 152,519,846.16
  5. Step 5: Solve for x
    x = 152,519,846.16/13,288.88
  6. Step 6: Final answer
    x = 11,477.25

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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.