Home / 12,513.06-18,769.60-4,191.54

Finding the Fourth Proportional to 12,513.06, 18,769.60 and 4,191.54

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Solution

The fourth proportional to 12,513.06, 18,769.60 and 4,191.54 is: 6,287.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,513.06 : 18,769.60 = 4,191.54 : x
  2. Step 2: Convert to fraction form
    12,513.06/18,769.60 = 4,191.54/x
  3. Step 3: Cross multiply
    12,513.06x = 18,769.60 × 4,191.54
  4. Step 4: Simplify right side
    12,513.06x = 78,673,529.18
  5. Step 5: Solve for x
    x = 78,673,529.18/12,513.06
  6. Step 6: Final answer
    x = 6,287.31

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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.