Home / 11,939.12-17,916.46-4,543.64

Finding the Fourth Proportional to 11,939.12, 17,916.46 and 4,543.64

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Solution

The fourth proportional to 11,939.12, 17,916.46 and 4,543.64 is: 6,818.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.12 : 17,916.46 = 4,543.64 : x
  2. Step 2: Convert to fraction form
    11,939.12/17,916.46 = 4,543.64/x
  3. Step 3: Cross multiply
    11,939.12x = 17,916.46 × 4,543.64
  4. Step 4: Simplify right side
    11,939.12x = 81,405,944.31
  5. Step 5: Solve for x
    x = 81,405,944.31/11,939.12
  6. Step 6: Final answer
    x = 6,818.42

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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.