Home / 13,885.56-20,828.16-3,355.50

Finding the Fourth Proportional to 13,885.56, 20,828.16 and 3,355.50

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Solution

The fourth proportional to 13,885.56, 20,828.16 and 3,355.50 is: 5,033.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,885.56 : 20,828.16 = 3,355.50 : x
  2. Step 2: Convert to fraction form
    13,885.56/20,828.16 = 3,355.50/x
  3. Step 3: Cross multiply
    13,885.56x = 20,828.16 × 3,355.50
  4. Step 4: Simplify right side
    13,885.56x = 69,888,890.88
  5. Step 5: Solve for x
    x = 69,888,890.88/13,885.56
  6. Step 6: Final answer
    x = 5,033.21

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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.