Home / 21,857.54-30,175.24-13,361.62

Finding the Fourth Proportional to 21,857.54, 30,175.24 and 13,361.62

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Solution

The fourth proportional to 21,857.54, 30,175.24 and 13,361.62 is: 18,446.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,857.54 : 30,175.24 = 13,361.62 : x
  2. Step 2: Convert to fraction form
    21,857.54/30,175.24 = 13,361.62/x
  3. Step 3: Cross multiply
    21,857.54x = 30,175.24 × 13,361.62
  4. Step 4: Simplify right side
    21,857.54x = 403,190,090.29
  5. Step 5: Solve for x
    x = 403,190,090.29/21,857.54
  6. Step 6: Final answer
    x = 18,446.27

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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.