Home / 21,982.68-30,334.14-13,028.66

Finding the Fourth Proportional to 21,982.68, 30,334.14 and 13,028.66

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Solution

The fourth proportional to 21,982.68, 30,334.14 and 13,028.66 is: 17,978.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,982.68 : 30,334.14 = 13,028.66 : x
  2. Step 2: Convert to fraction form
    21,982.68/30,334.14 = 13,028.66/x
  3. Step 3: Cross multiply
    21,982.68x = 30,334.14 × 13,028.66
  4. Step 4: Simplify right side
    21,982.68x = 395,213,196.45
  5. Step 5: Solve for x
    x = 395,213,196.45/21,982.68
  6. Step 6: Final answer
    x = 17,978.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.