Home / 18,703.24-28,031.20-8,170.48

Finding the Fourth Proportional to 18,703.24, 28,031.20 and 8,170.48

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Solution

The fourth proportional to 18,703.24, 28,031.20 and 8,170.48 is: 12,245.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.24 : 28,031.20 = 8,170.48 : x
  2. Step 2: Convert to fraction form
    18,703.24/28,031.20 = 8,170.48/x
  3. Step 3: Cross multiply
    18,703.24x = 28,031.20 × 8,170.48
  4. Step 4: Simplify right side
    18,703.24x = 229,028,358.98
  5. Step 5: Solve for x
    x = 229,028,358.98/18,703.24
  6. Step 6: Final answer
    x = 12,245.38

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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.