Home / 20,077.70-30,121.33-6,930.18

Finding the Fourth Proportional to 20,077.70, 30,121.33 and 6,930.18

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Solution

The fourth proportional to 20,077.70, 30,121.33 and 6,930.18 is: 10,396.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.70 : 30,121.33 = 6,930.18 : x
  2. Step 2: Convert to fraction form
    20,077.70/30,121.33 = 6,930.18/x
  3. Step 3: Cross multiply
    20,077.70x = 30,121.33 × 6,930.18
  4. Step 4: Simplify right side
    20,077.70x = 208,746,238.74
  5. Step 5: Solve for x
    x = 208,746,238.74/20,077.70
  6. Step 6: Final answer
    x = 10,396.92

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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.