Home / 20,336.80-30,506.15-7,190.50

Finding the Fourth Proportional to 20,336.80, 30,506.15 and 7,190.50

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Solution

The fourth proportional to 20,336.80, 30,506.15 and 7,190.50 is: 10,786.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.80 : 30,506.15 = 7,190.50 : x
  2. Step 2: Convert to fraction form
    20,336.80/30,506.15 = 7,190.50/x
  3. Step 3: Cross multiply
    20,336.80x = 30,506.15 × 7,190.50
  4. Step 4: Simplify right side
    20,336.80x = 219,354,471.58
  5. Step 5: Solve for x
    x = 219,354,471.58/20,336.80
  6. Step 6: Final answer
    x = 10,786.09

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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.