Home / 20,450.70-30,621.38-11,673.54

Finding the Fourth Proportional to 20,450.70, 30,621.38 and 11,673.54

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Solution

The fourth proportional to 20,450.70, 30,621.38 and 11,673.54 is: 17,479.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.70 : 30,621.38 = 11,673.54 : x
  2. Step 2: Convert to fraction form
    20,450.70/30,621.38 = 11,673.54/x
  3. Step 3: Cross multiply
    20,450.70x = 30,621.38 × 11,673.54
  4. Step 4: Simplify right side
    20,450.70x = 357,459,845.92
  5. Step 5: Solve for x
    x = 357,459,845.92/20,450.70
  6. Step 6: Final answer
    x = 17,479.10

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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.