Home / 13,684.54-20,543.82-13,621.36

Finding the Fourth Proportional to 13,684.54, 20,543.82 and 13,621.36

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Solution

The fourth proportional to 13,684.54, 20,543.82 and 13,621.36 is: 20,448.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,684.54 : 20,543.82 = 13,621.36 : x
  2. Step 2: Convert to fraction form
    13,684.54/20,543.82 = 13,621.36/x
  3. Step 3: Cross multiply
    13,684.54x = 20,543.82 × 13,621.36
  4. Step 4: Simplify right side
    13,684.54x = 279,834,768.00
  5. Step 5: Solve for x
    x = 279,834,768.00/13,684.54
  6. Step 6: Final answer
    x = 20,448.97

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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.