Home / 18,958.34-28,447.80-7,872.64

Finding the Fourth Proportional to 18,958.34, 28,447.80 and 7,872.64

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Solution

The fourth proportional to 18,958.34, 28,447.80 and 7,872.64 is: 11,813.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,958.34 : 28,447.80 = 7,872.64 : x
  2. Step 2: Convert to fraction form
    18,958.34/28,447.80 = 7,872.64/x
  3. Step 3: Cross multiply
    18,958.34x = 28,447.80 × 7,872.64
  4. Step 4: Simplify right side
    18,958.34x = 223,959,288.19
  5. Step 5: Solve for x
    x = 223,959,288.19/18,958.34
  6. Step 6: Final answer
    x = 11,813.23

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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.