Home / 20,355.96-30,672.61-16,739.21

Finding the Fourth Proportional to 20,355.96, 30,672.61 and 16,739.21

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Solution

The fourth proportional to 20,355.96, 30,672.61 and 16,739.21 is: 25,222.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,355.96 : 30,672.61 = 16,739.21 : x
  2. Step 2: Convert to fraction form
    20,355.96/30,672.61 = 16,739.21/x
  3. Step 3: Cross multiply
    20,355.96x = 30,672.61 × 16,739.21
  4. Step 4: Simplify right side
    20,355.96x = 513,435,389.03
  5. Step 5: Solve for x
    x = 513,435,389.03/20,355.96
  6. Step 6: Final answer
    x = 25,222.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.