Home / 13,988.19-20,982.08-3,458.33

Finding the Fourth Proportional to 13,988.19, 20,982.08 and 3,458.33

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Solution

The fourth proportional to 13,988.19, 20,982.08 and 3,458.33 is: 5,187.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.19 : 20,982.08 = 3,458.33 : x
  2. Step 2: Convert to fraction form
    13,988.19/20,982.08 = 3,458.33/x
  3. Step 3: Cross multiply
    13,988.19x = 20,982.08 × 3,458.33
  4. Step 4: Simplify right side
    13,988.19x = 72,562,860.46
  5. Step 5: Solve for x
    x = 72,562,860.46/13,988.19
  6. Step 6: Final answer
    x = 5,187.44

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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.