Home / 20,216.21-30,329.80-11,457.27

Finding the Fourth Proportional to 20,216.21, 30,329.80 and 11,457.27

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Solution

The fourth proportional to 20,216.21, 30,329.80 and 11,457.27 is: 17,189.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.21 : 30,329.80 = 11,457.27 : x
  2. Step 2: Convert to fraction form
    20,216.21/30,329.80 = 11,457.27/x
  3. Step 3: Cross multiply
    20,216.21x = 30,329.80 × 11,457.27
  4. Step 4: Simplify right side
    20,216.21x = 347,496,679.00
  5. Step 5: Solve for x
    x = 347,496,679.00/20,216.21
  6. Step 6: Final answer
    x = 17,189.02

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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.