Home / 21,834-30,133.35-13,450.50

Finding the Fourth Proportional to 21,834, 30,133.35 and 13,450.50

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Solution

The fourth proportional to 21,834, 30,133.35 and 13,450.50 is: 18,563.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,834 : 30,133.35 = 13,450.50 : x
  2. Step 2: Convert to fraction form
    21,834/30,133.35 = 13,450.50/x
  3. Step 3: Cross multiply
    21,834x = 30,133.35 × 13,450.50
  4. Step 4: Simplify right side
    21,834x = 405,308,624.18
  5. Step 5: Solve for x
    x = 405,308,624.18/21,834
  6. Step 6: Final answer
    x = 18,563.19

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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.