Home / 13,930.80-20,896.20-13,165.35

Finding the Fourth Proportional to 13,930.80, 20,896.20 and 13,165.35

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Solution

The fourth proportional to 13,930.80, 20,896.20 and 13,165.35 is: 19,748.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.80 : 20,896.20 = 13,165.35 : x
  2. Step 2: Convert to fraction form
    13,930.80/20,896.20 = 13,165.35/x
  3. Step 3: Cross multiply
    13,930.80x = 20,896.20 × 13,165.35
  4. Step 4: Simplify right side
    13,930.80x = 275,105,786.67
  5. Step 5: Solve for x
    x = 275,105,786.67/13,930.80
  6. Step 6: Final answer
    x = 19,748.03

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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.