Home / 20,491.80-30,730.26-7,161.04

Finding the Fourth Proportional to 20,491.80, 30,730.26 and 7,161.04

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Solution

The fourth proportional to 20,491.80, 30,730.26 and 7,161.04 is: 10,738.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491.80 : 30,730.26 = 7,161.04 : x
  2. Step 2: Convert to fraction form
    20,491.80/30,730.26 = 7,161.04/x
  3. Step 3: Cross multiply
    20,491.80x = 30,730.26 × 7,161.04
  4. Step 4: Simplify right side
    20,491.80x = 220,060,621.07
  5. Step 5: Solve for x
    x = 220,060,621.07/20,491.80
  6. Step 6: Final answer
    x = 10,738.96

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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.