Home / 15,453.54-21,325.83-8,379.96

Finding the Fourth Proportional to 15,453.54, 21,325.83 and 8,379.96

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Solution

The fourth proportional to 15,453.54, 21,325.83 and 8,379.96 is: 11,564.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.54 : 21,325.83 = 8,379.96 : x
  2. Step 2: Convert to fraction form
    15,453.54/21,325.83 = 8,379.96/x
  3. Step 3: Cross multiply
    15,453.54x = 21,325.83 × 8,379.96
  4. Step 4: Simplify right side
    15,453.54x = 178,709,602.37
  5. Step 5: Solve for x
    x = 178,709,602.37/15,453.54
  6. Step 6: Final answer
    x = 11,564.31

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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.