Home / 21,383.34-29,505.51-19,662.90

Finding the Fourth Proportional to 21,383.34, 29,505.51 and 19,662.90

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Solution

The fourth proportional to 21,383.34, 29,505.51 and 19,662.90 is: 27,131.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,383.34 : 29,505.51 = 19,662.90 : x
  2. Step 2: Convert to fraction form
    21,383.34/29,505.51 = 19,662.90/x
  3. Step 3: Cross multiply
    21,383.34x = 29,505.51 × 19,662.90
  4. Step 4: Simplify right side
    21,383.34x = 580,163,892.58
  5. Step 5: Solve for x
    x = 580,163,892.58/21,383.34
  6. Step 6: Final answer
    x = 27,131.58

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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.