Home / 21,584.56-29,783.12-13,631.04

Finding the Fourth Proportional to 21,584.56, 29,783.12 and 13,631.04

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Solution

The fourth proportional to 21,584.56, 29,783.12 and 13,631.04 is: 18,808.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,584.56 : 29,783.12 = 13,631.04 : x
  2. Step 2: Convert to fraction form
    21,584.56/29,783.12 = 13,631.04/x
  3. Step 3: Cross multiply
    21,584.56x = 29,783.12 × 13,631.04
  4. Step 4: Simplify right side
    21,584.56x = 405,974,900.04
  5. Step 5: Solve for x
    x = 405,974,900.04/21,584.56
  6. Step 6: Final answer
    x = 18,808.58

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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.