Home / 20,121.63-30,182.72-6,081.77

Finding the Fourth Proportional to 20,121.63, 30,182.72 and 6,081.77

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Solution

The fourth proportional to 20,121.63, 30,182.72 and 6,081.77 is: 9,122.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.63 : 30,182.72 = 6,081.77 : x
  2. Step 2: Convert to fraction form
    20,121.63/30,182.72 = 6,081.77/x
  3. Step 3: Cross multiply
    20,121.63x = 30,182.72 × 6,081.77
  4. Step 4: Simplify right side
    20,121.63x = 183,564,179.69
  5. Step 5: Solve for x
    x = 183,564,179.69/20,121.63
  6. Step 6: Final answer
    x = 9,122.73

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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.