Home / 21,375.90-29,494.53-11,942.64

Finding the Fourth Proportional to 21,375.90, 29,494.53 and 11,942.64

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Solution

The fourth proportional to 21,375.90, 29,494.53 and 11,942.64 is: 16,478.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.90 : 29,494.53 = 11,942.64 : x
  2. Step 2: Convert to fraction form
    21,375.90/29,494.53 = 11,942.64/x
  3. Step 3: Cross multiply
    21,375.90x = 29,494.53 × 11,942.64
  4. Step 4: Simplify right side
    21,375.90x = 352,242,553.76
  5. Step 5: Solve for x
    x = 352,242,553.76/21,375.90
  6. Step 6: Final answer
    x = 16,478.49

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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.