Home / 16,771.68-23,120.53-11,720.21

Finding the Fourth Proportional to 16,771.68, 23,120.53 and 11,720.21

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Solution

The fourth proportional to 16,771.68, 23,120.53 and 11,720.21 is: 16,156.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,771.68 : 23,120.53 = 11,720.21 : x
  2. Step 2: Convert to fraction form
    16,771.68/23,120.53 = 11,720.21/x
  3. Step 3: Cross multiply
    16,771.68x = 23,120.53 × 11,720.21
  4. Step 4: Simplify right side
    16,771.68x = 270,977,466.91
  5. Step 5: Solve for x
    x = 270,977,466.91/16,771.68
  6. Step 6: Final answer
    x = 16,156.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.