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Finding the Fourth Proportional to 13,866.67, 19,137.99 and 7,898.90

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Solution

The fourth proportional to 13,866.67, 19,137.99 and 7,898.90 is: 10,901.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,866.67 : 19,137.99 = 7,898.90 : x
  2. Step 2: Convert to fraction form
    13,866.67/19,137.99 = 7,898.90/x
  3. Step 3: Cross multiply
    13,866.67x = 19,137.99 × 7,898.90
  4. Step 4: Simplify right side
    13,866.67x = 151,169,069.21
  5. Step 5: Solve for x
    x = 151,169,069.21/13,866.67
  6. Step 6: Final answer
    x = 10,901.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.