Home / 13,634.37-20,445-8,088.43

Finding the Fourth Proportional to 13,634.37, 20,445 and 8,088.43

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Solution

The fourth proportional to 13,634.37, 20,445 and 8,088.43 is: 12,128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.37 : 20,445 = 8,088.43 : x
  2. Step 2: Convert to fraction form
    13,634.37/20,445 = 8,088.43/x
  3. Step 3: Cross multiply
    13,634.37x = 20,445 × 8,088.43
  4. Step 4: Simplify right side
    13,634.37x = 165,367,951.35
  5. Step 5: Solve for x
    x = 165,367,951.35/13,634.37
  6. Step 6: Final answer
    x = 12,128.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.