Home / 13,988.56-20,982.72-5,227.60

Finding the Fourth Proportional to 13,988.56, 20,982.72 and 5,227.60

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Solution

The fourth proportional to 13,988.56, 20,982.72 and 5,227.60 is: 7,841.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.56 : 20,982.72 = 5,227.60 : x
  2. Step 2: Convert to fraction form
    13,988.56/20,982.72 = 5,227.60/x
  3. Step 3: Cross multiply
    13,988.56x = 20,982.72 × 5,227.60
  4. Step 4: Simplify right side
    13,988.56x = 109,689,267.07
  5. Step 5: Solve for x
    x = 109,689,267.07/13,988.56
  6. Step 6: Final answer
    x = 7,841.36

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1.5x scale

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.