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Finding the Fourth Proportional to 18,716.08, 28,059.32 and 7,028

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Solution

The fourth proportional to 18,716.08, 28,059.32 and 7,028 is: 10,536.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716.08 : 28,059.32 = 7,028 : x
  2. Step 2: Convert to fraction form
    18,716.08/28,059.32 = 7,028/x
  3. Step 3: Cross multiply
    18,716.08x = 28,059.32 × 7,028
  4. Step 4: Simplify right side
    18,716.08x = 197,200,900.96
  5. Step 5: Solve for x
    x = 197,200,900.96/18,716.08
  6. Step 6: Final answer
    x = 10,536.44

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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.