Home / 13,988.61-20,982.87-4,127.97

Finding the Fourth Proportional to 13,988.61, 20,982.87 and 4,127.97

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Solution

The fourth proportional to 13,988.61, 20,982.87 and 4,127.97 is: 6,191.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.61 : 20,982.87 = 4,127.97 : x
  2. Step 2: Convert to fraction form
    13,988.61/20,982.87 = 4,127.97/x
  3. Step 3: Cross multiply
    13,988.61x = 20,982.87 × 4,127.97
  4. Step 4: Simplify right side
    13,988.61x = 86,616,657.87
  5. Step 5: Solve for x
    x = 86,616,657.87/13,988.61
  6. Step 6: Final answer
    x = 6,191.94

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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.