Home / 21,982.40-30,321.04-14,034.56

Finding the Fourth Proportional to 21,982.40, 30,321.04 and 14,034.56

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Solution

The fourth proportional to 21,982.40, 30,321.04 and 14,034.56 is: 19,358.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,982.40 : 30,321.04 = 14,034.56 : x
  2. Step 2: Convert to fraction form
    21,982.40/30,321.04 = 14,034.56/x
  3. Step 3: Cross multiply
    21,982.40x = 30,321.04 × 14,034.56
  4. Step 4: Simplify right side
    21,982.40x = 425,542,455.14
  5. Step 5: Solve for x
    x = 425,542,455.14/21,982.40
  6. Step 6: Final answer
    x = 19,358.33

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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.