Home / 13,689.87-20,537.01-5,365.37

Finding the Fourth Proportional to 13,689.87, 20,537.01 and 5,365.37

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Solution

The fourth proportional to 13,689.87, 20,537.01 and 5,365.37 is: 8,048.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.87 : 20,537.01 = 5,365.37 : x
  2. Step 2: Convert to fraction form
    13,689.87/20,537.01 = 5,365.37/x
  3. Step 3: Cross multiply
    13,689.87x = 20,537.01 × 5,365.37
  4. Step 4: Simplify right side
    13,689.87x = 110,188,554.66
  5. Step 5: Solve for x
    x = 110,188,554.66/13,689.87
  6. Step 6: Final answer
    x = 8,048.91

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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.