Home / 13,455.56-20,164.83-6,867.90

Finding the Fourth Proportional to 13,455.56, 20,164.83 and 6,867.90

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Solution

The fourth proportional to 13,455.56, 20,164.83 and 6,867.90 is: 10,292.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.56 : 20,164.83 = 6,867.90 : x
  2. Step 2: Convert to fraction form
    13,455.56/20,164.83 = 6,867.90/x
  3. Step 3: Cross multiply
    13,455.56x = 20,164.83 × 6,867.90
  4. Step 4: Simplify right side
    13,455.56x = 138,490,035.96
  5. Step 5: Solve for x
    x = 138,490,035.96/13,455.56
  6. Step 6: Final answer
    x = 10,292.41

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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.