Home / 11,685.47-16,125.94-6,380.28

Finding the Fourth Proportional to 11,685.47, 16,125.94 and 6,380.28

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Solution

The fourth proportional to 11,685.47, 16,125.94 and 6,380.28 is: 8,804.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.47 : 16,125.94 = 6,380.28 : x
  2. Step 2: Convert to fraction form
    11,685.47/16,125.94 = 6,380.28/x
  3. Step 3: Cross multiply
    11,685.47x = 16,125.94 × 6,380.28
  4. Step 4: Simplify right side
    11,685.47x = 102,887,996.51
  5. Step 5: Solve for x
    x = 102,887,996.51/11,685.47
  6. Step 6: Final answer
    x = 8,804.78

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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.