Home / 13,988.28-20,982.24-4,127.52

Finding the Fourth Proportional to 13,988.28, 20,982.24 and 4,127.52

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Solution

The fourth proportional to 13,988.28, 20,982.24 and 4,127.52 is: 6,191.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.28 : 20,982.24 = 4,127.52 : x
  2. Step 2: Convert to fraction form
    13,988.28/20,982.24 = 4,127.52/x
  3. Step 3: Cross multiply
    13,988.28x = 20,982.24 × 4,127.52
  4. Step 4: Simplify right side
    13,988.28x = 86,604,615.24
  5. Step 5: Solve for x
    x = 86,604,615.24/13,988.28
  6. Step 6: Final answer
    x = 6,191.23

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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.