Home / 13,988.25-20,982.38-4,127.39

Finding the Fourth Proportional to 13,988.25, 20,982.38 and 4,127.39

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Solution

The fourth proportional to 13,988.25, 20,982.38 and 4,127.39 is: 6,191.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.25 : 20,982.38 = 4,127.39 : x
  2. Step 2: Convert to fraction form
    13,988.25/20,982.38 = 4,127.39/x
  3. Step 3: Cross multiply
    13,988.25x = 20,982.38 × 4,127.39
  4. Step 4: Simplify right side
    13,988.25x = 86,602,418.52
  5. Step 5: Solve for x
    x = 86,602,418.52/13,988.25
  6. Step 6: Final answer
    x = 6,191.08

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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.