Home / 15,163.20-20,995.20-13,996.80

Finding the Fourth Proportional to 15,163.20, 20,995.20 and 13,996.80

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Solution

The fourth proportional to 15,163.20, 20,995.20 and 13,996.80 is: 19,380.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.20 : 20,995.20 = 13,996.80 : x
  2. Step 2: Convert to fraction form
    15,163.20/20,995.20 = 13,996.80/x
  3. Step 3: Cross multiply
    15,163.20x = 20,995.20 × 13,996.80
  4. Step 4: Simplify right side
    15,163.20x = 293,865,615.36
  5. Step 5: Solve for x
    x = 293,865,615.36/15,163.20
  6. Step 6: Final answer
    x = 19,380.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.