Home / 11,825.31-16,318.70-6,447.80

Finding the Fourth Proportional to 11,825.31, 16,318.70 and 6,447.80

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Solution

The fourth proportional to 11,825.31, 16,318.70 and 6,447.80 is: 8,897.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,825.31 : 16,318.70 = 6,447.80 : x
  2. Step 2: Convert to fraction form
    11,825.31/16,318.70 = 6,447.80/x
  3. Step 3: Cross multiply
    11,825.31x = 16,318.70 × 6,447.80
  4. Step 4: Simplify right side
    11,825.31x = 105,219,713.86
  5. Step 5: Solve for x
    x = 105,219,713.86/11,825.31
  6. Step 6: Final answer
    x = 8,897.84

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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.