Home / 11,684.45-16,145.63-8,321.43

Finding the Fourth Proportional to 11,684.45, 16,145.63 and 8,321.43

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Solution

The fourth proportional to 11,684.45, 16,145.63 and 8,321.43 is: 11,498.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,684.45 : 16,145.63 = 8,321.43 : x
  2. Step 2: Convert to fraction form
    11,684.45/16,145.63 = 8,321.43/x
  3. Step 3: Cross multiply
    11,684.45x = 16,145.63 × 8,321.43
  4. Step 4: Simplify right side
    11,684.45x = 134,354,639.12
  5. Step 5: Solve for x
    x = 134,354,639.12/11,684.45
  6. Step 6: Final answer
    x = 11,498.58

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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.