Home / 18,656.16-27,991.68-18,361.28

Finding the Fourth Proportional to 18,656.16, 27,991.68 and 18,361.28

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Solution

The fourth proportional to 18,656.16, 27,991.68 and 18,361.28 is: 27,549.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656.16 : 27,991.68 = 18,361.28 : x
  2. Step 2: Convert to fraction form
    18,656.16/27,991.68 = 18,361.28/x
  3. Step 3: Cross multiply
    18,656.16x = 27,991.68 × 18,361.28
  4. Step 4: Simplify right side
    18,656.16x = 513,963,074.15
  5. Step 5: Solve for x
    x = 513,963,074.15/18,656.16
  6. Step 6: Final answer
    x = 27,549.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.