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Finding the Fourth Proportional to 19,289.69, 28,936.86 and 6,807.14

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Solution

The fourth proportional to 19,289.69, 28,936.86 and 6,807.14 is: 10,211.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,289.69 : 28,936.86 = 6,807.14 : x
  2. Step 2: Convert to fraction form
    19,289.69/28,936.86 = 6,807.14/x
  3. Step 3: Cross multiply
    19,289.69x = 28,936.86 × 6,807.14
  4. Step 4: Simplify right side
    19,289.69x = 196,977,233.77
  5. Step 5: Solve for x
    x = 196,977,233.77/19,289.69
  6. Step 6: Final answer
    x = 10,211.53

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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.