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Finding the Fourth Proportional to 19,328, 28,996.32 and 7,016

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Solution

The fourth proportional to 19,328, 28,996.32 and 7,016 is: 10,525.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,328 : 28,996.32 = 7,016 : x
  2. Step 2: Convert to fraction form
    19,328/28,996.32 = 7,016/x
  3. Step 3: Cross multiply
    19,328x = 28,996.32 × 7,016
  4. Step 4: Simplify right side
    19,328x = 203,438,181.12
  5. Step 5: Solve for x
    x = 203,438,181.12/19,328
  6. Step 6: Final answer
    x = 10,525.57

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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.