Home / 39,621.53-54,676.55-21,716.21

Finding the Fourth Proportional to 39,621.53, 54,676.55 and 21,716.21

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Solution

The fourth proportional to 39,621.53, 54,676.55 and 21,716.21 is: 29,967.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,621.53 : 54,676.55 = 21,716.21 : x
  2. Step 2: Convert to fraction form
    39,621.53/54,676.55 = 21,716.21/x
  3. Step 3: Cross multiply
    39,621.53x = 54,676.55 × 21,716.21
  4. Step 4: Simplify right side
    39,621.53x = 1,187,367,059.91
  5. Step 5: Solve for x
    x = 1,187,367,059.91/39,621.53
  6. Step 6: Final answer
    x = 29,967.73

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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.