Home / 20,121.60-30,182.40-6,083.79

Finding the Fourth Proportional to 20,121.60, 30,182.40 and 6,083.79

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Solution

The fourth proportional to 20,121.60, 30,182.40 and 6,083.79 is: 9,125.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.60 : 30,182.40 = 6,083.79 : x
  2. Step 2: Convert to fraction form
    20,121.60/30,182.40 = 6,083.79/x
  3. Step 3: Cross multiply
    20,121.60x = 30,182.40 × 6,083.79
  4. Step 4: Simplify right side
    20,121.60x = 183,623,383.30
  5. Step 5: Solve for x
    x = 183,623,383.30/20,121.60
  6. Step 6: Final answer
    x = 9,125.69

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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.