Home / 13,945.57-20,918.49-3,557.32

Finding the Fourth Proportional to 13,945.57, 20,918.49 and 3,557.32

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Solution

The fourth proportional to 13,945.57, 20,918.49 and 3,557.32 is: 5,336.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.57 : 20,918.49 = 3,557.32 : x
  2. Step 2: Convert to fraction form
    13,945.57/20,918.49 = 3,557.32/x
  3. Step 3: Cross multiply
    13,945.57x = 20,918.49 × 3,557.32
  4. Step 4: Simplify right side
    13,945.57x = 74,413,762.85
  5. Step 5: Solve for x
    x = 74,413,762.85/13,945.57
  6. Step 6: Final answer
    x = 5,336.01

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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.