Home / 13,945.12-20,918.14-5,055.96

Finding the Fourth Proportional to 13,945.12, 20,918.14 and 5,055.96

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Solution

The fourth proportional to 13,945.12, 20,918.14 and 5,055.96 is: 7,584.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.12 : 20,918.14 = 5,055.96 : x
  2. Step 2: Convert to fraction form
    13,945.12/20,918.14 = 5,055.96/x
  3. Step 3: Cross multiply
    13,945.12x = 20,918.14 × 5,055.96
  4. Step 4: Simplify right side
    13,945.12x = 105,761,279.11
  5. Step 5: Solve for x
    x = 105,761,279.11/13,945.12
  6. Step 6: Final answer
    x = 7,584.11

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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.