Home / 18,738.90-28,105.50-7,049.40

Finding the Fourth Proportional to 18,738.90, 28,105.50 and 7,049.40

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Solution

The fourth proportional to 18,738.90, 28,105.50 and 7,049.40 is: 10,573.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.90 : 28,105.50 = 7,049.40 : x
  2. Step 2: Convert to fraction form
    18,738.90/28,105.50 = 7,049.40/x
  3. Step 3: Cross multiply
    18,738.90x = 28,105.50 × 7,049.40
  4. Step 4: Simplify right side
    18,738.90x = 198,126,911.70
  5. Step 5: Solve for x
    x = 198,126,911.70/18,738.90
  6. Step 6: Final answer
    x = 10,573.03

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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.