Home / 11,685.20-16,125.63-6,380.15

Finding the Fourth Proportional to 11,685.20, 16,125.63 and 6,380.15

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Solution

The fourth proportional to 11,685.20, 16,125.63 and 6,380.15 is: 8,804.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.20 : 16,125.63 = 6,380.15 : x
  2. Step 2: Convert to fraction form
    11,685.20/16,125.63 = 6,380.15/x
  3. Step 3: Cross multiply
    11,685.20x = 16,125.63 × 6,380.15
  4. Step 4: Simplify right side
    11,685.20x = 102,883,857.62
  5. Step 5: Solve for x
    x = 102,883,857.62/11,685.20
  6. Step 6: Final answer
    x = 8,804.63

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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.