Home / 13,905.06-20,850.78-6,876.96

Finding the Fourth Proportional to 13,905.06, 20,850.78 and 6,876.96

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Solution

The fourth proportional to 13,905.06, 20,850.78 and 6,876.96 is: 10,312.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.06 : 20,850.78 = 6,876.96 : x
  2. Step 2: Convert to fraction form
    13,905.06/20,850.78 = 6,876.96/x
  3. Step 3: Cross multiply
    13,905.06x = 20,850.78 × 6,876.96
  4. Step 4: Simplify right side
    13,905.06x = 143,389,980.03
  5. Step 5: Solve for x
    x = 143,389,980.03/13,905.06
  6. Step 6: Final answer
    x = 10,312.07

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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.