Home / 13,769.43-20,661.21-6,749.31

Finding the Fourth Proportional to 13,769.43, 20,661.21 and 6,749.31

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Solution

The fourth proportional to 13,769.43, 20,661.21 and 6,749.31 is: 10,127.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,769.43 : 20,661.21 = 6,749.31 : x
  2. Step 2: Convert to fraction form
    13,769.43/20,661.21 = 6,749.31/x
  3. Step 3: Cross multiply
    13,769.43x = 20,661.21 × 6,749.31
  4. Step 4: Simplify right side
    13,769.43x = 139,448,911.27
  5. Step 5: Solve for x
    x = 139,448,911.27/13,769.43
  6. Step 6: Final answer
    x = 10,127.43

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1.5x scale

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.