Home / 20,131.24-30,216.06-12,355.24

Finding the Fourth Proportional to 20,131.24, 30,216.06 and 12,355.24

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Solution

The fourth proportional to 20,131.24, 30,216.06 and 12,355.24 is: 18,544.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.24 : 30,216.06 = 12,355.24 : x
  2. Step 2: Convert to fraction form
    20,131.24/30,216.06 = 12,355.24/x
  3. Step 3: Cross multiply
    20,131.24x = 30,216.06 × 12,355.24
  4. Step 4: Simplify right side
    20,131.24x = 373,326,673.15
  5. Step 5: Solve for x
    x = 373,326,673.15/20,131.24
  6. Step 6: Final answer
    x = 18,544.64

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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.