Home / 13,850.40-20,772.54-3,987.48

Finding the Fourth Proportional to 13,850.40, 20,772.54 and 3,987.48

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Solution

The fourth proportional to 13,850.40, 20,772.54 and 3,987.48 is: 5,980.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,850.40 : 20,772.54 = 3,987.48 : x
  2. Step 2: Convert to fraction form
    13,850.40/20,772.54 = 3,987.48/x
  3. Step 3: Cross multiply
    13,850.40x = 20,772.54 × 3,987.48
  4. Step 4: Simplify right side
    13,850.40x = 82,830,087.80
  5. Step 5: Solve for x
    x = 82,830,087.80/13,850.40
  6. Step 6: Final answer
    x = 5,980.34

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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.