Home / 20,383.50-30,579.30-7,236.87

Finding the Fourth Proportional to 20,383.50, 30,579.30 and 7,236.87

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Solution

The fourth proportional to 20,383.50, 30,579.30 and 7,236.87 is: 10,856.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383.50 : 30,579.30 = 7,236.87 : x
  2. Step 2: Convert to fraction form
    20,383.50/30,579.30 = 7,236.87/x
  3. Step 3: Cross multiply
    20,383.50x = 30,579.30 × 7,236.87
  4. Step 4: Simplify right side
    20,383.50x = 221,298,418.79
  5. Step 5: Solve for x
    x = 221,298,418.79/20,383.50
  6. Step 6: Final answer
    x = 10,856.74

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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.