Home / 15,163.20-20,885.04-15,072.48

Finding the Fourth Proportional to 15,163.20, 20,885.04 and 15,072.48

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Solution

The fourth proportional to 15,163.20, 20,885.04 and 15,072.48 is: 20,760.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.20 : 20,885.04 = 15,072.48 : x
  2. Step 2: Convert to fraction form
    15,163.20/20,885.04 = 15,072.48/x
  3. Step 3: Cross multiply
    15,163.20x = 20,885.04 × 15,072.48
  4. Step 4: Simplify right side
    15,163.20x = 314,789,347.70
  5. Step 5: Solve for x
    x = 314,789,347.70/15,163.20
  6. Step 6: Final answer
    x = 20,760.09

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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.