Home / 13,841.40-20,759.04-3,978.48

Finding the Fourth Proportional to 13,841.40, 20,759.04 and 3,978.48

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Solution

The fourth proportional to 13,841.40, 20,759.04 and 3,978.48 is: 5,966.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,841.40 : 20,759.04 = 3,978.48 : x
  2. Step 2: Convert to fraction form
    13,841.40/20,759.04 = 3,978.48/x
  3. Step 3: Cross multiply
    13,841.40x = 20,759.04 × 3,978.48
  4. Step 4: Simplify right side
    13,841.40x = 82,589,425.46
  5. Step 5: Solve for x
    x = 82,589,425.46/13,841.40
  6. Step 6: Final answer
    x = 5,966.84

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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.