Home / 13,209.84-19,821.21-5,813.37

Finding the Fourth Proportional to 13,209.84, 19,821.21 and 5,813.37

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Solution

The fourth proportional to 13,209.84, 19,821.21 and 5,813.37 is: 8,722.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.84 : 19,821.21 = 5,813.37 : x
  2. Step 2: Convert to fraction form
    13,209.84/19,821.21 = 5,813.37/x
  3. Step 3: Cross multiply
    13,209.84x = 19,821.21 × 5,813.37
  4. Step 4: Simplify right side
    13,209.84x = 115,228,027.58
  5. Step 5: Solve for x
    x = 115,228,027.58/13,209.84
  6. Step 6: Final answer
    x = 8,722.89

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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.