Home / 13,984.36-20,983.80-13,177.60

Finding the Fourth Proportional to 13,984.36, 20,983.80 and 13,177.60

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Solution

The fourth proportional to 13,984.36, 20,983.80 and 13,177.60 is: 19,773.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.36 : 20,983.80 = 13,177.60 : x
  2. Step 2: Convert to fraction form
    13,984.36/20,983.80 = 13,177.60/x
  3. Step 3: Cross multiply
    13,984.36x = 20,983.80 × 13,177.60
  4. Step 4: Simplify right side
    13,984.36x = 276,516,122.88
  5. Step 5: Solve for x
    x = 276,516,122.88/13,984.36
  6. Step 6: Final answer
    x = 19,773.24

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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.