Home / 20,729.80-31,028.55-16,355.80

Finding the Fourth Proportional to 20,729.80, 31,028.55 and 16,355.80

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Solution

The fourth proportional to 20,729.80, 31,028.55 and 16,355.80 is: 24,481.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.80 : 31,028.55 = 16,355.80 : x
  2. Step 2: Convert to fraction form
    20,729.80/31,028.55 = 16,355.80/x
  3. Step 3: Cross multiply
    20,729.80x = 31,028.55 × 16,355.80
  4. Step 4: Simplify right side
    20,729.80x = 507,496,758.09
  5. Step 5: Solve for x
    x = 507,496,758.09/20,729.80
  6. Step 6: Final answer
    x = 24,481.51

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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.