Home / 13,705.80-20,553.78-4,938.36

Finding the Fourth Proportional to 13,705.80, 20,553.78 and 4,938.36

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Solution

The fourth proportional to 13,705.80, 20,553.78 and 4,938.36 is: 7,405.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.80 : 20,553.78 = 4,938.36 : x
  2. Step 2: Convert to fraction form
    13,705.80/20,553.78 = 4,938.36/x
  3. Step 3: Cross multiply
    13,705.80x = 20,553.78 × 4,938.36
  4. Step 4: Simplify right side
    13,705.80x = 101,501,965.00
  5. Step 5: Solve for x
    x = 101,501,965.00/13,705.80
  6. Step 6: Final answer
    x = 7,405.77

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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.