Home / 20,195.90-30,295.20-6,868.70

Finding the Fourth Proportional to 20,195.90, 30,295.20 and 6,868.70

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Solution

The fourth proportional to 20,195.90, 30,295.20 and 6,868.70 is: 10,303.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.90 : 30,295.20 = 6,868.70 : x
  2. Step 2: Convert to fraction form
    20,195.90/30,295.20 = 6,868.70/x
  3. Step 3: Cross multiply
    20,195.90x = 30,295.20 × 6,868.70
  4. Step 4: Simplify right side
    20,195.90x = 208,088,640.24
  5. Step 5: Solve for x
    x = 208,088,640.24/20,195.90
  6. Step 6: Final answer
    x = 10,303.51

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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.