Home / 13,982.49-20,973.60-4,121.62

Finding the Fourth Proportional to 13,982.49, 20,973.60 and 4,121.62

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Solution

The fourth proportional to 13,982.49, 20,973.60 and 4,121.62 is: 6,182.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.49 : 20,973.60 = 4,121.62 : x
  2. Step 2: Convert to fraction form
    13,982.49/20,973.60 = 4,121.62/x
  3. Step 3: Cross multiply
    13,982.49x = 20,973.60 × 4,121.62
  4. Step 4: Simplify right side
    13,982.49x = 86,445,156.80
  5. Step 5: Solve for x
    x = 86,445,156.80/13,982.49
  6. Step 6: Final answer
    x = 6,182.39

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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.