Home / 19,321.60-28,982.40-18,932.80

Finding the Fourth Proportional to 19,321.60, 28,982.40 and 18,932.80

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Solution

The fourth proportional to 19,321.60, 28,982.40 and 18,932.80 is: 28,399.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321.60 : 28,982.40 = 18,932.80 : x
  2. Step 2: Convert to fraction form
    19,321.60/28,982.40 = 18,932.80/x
  3. Step 3: Cross multiply
    19,321.60x = 28,982.40 × 18,932.80
  4. Step 4: Simplify right side
    19,321.60x = 548,717,982.72
  5. Step 5: Solve for x
    x = 548,717,982.72/19,321.60
  6. Step 6: Final answer
    x = 28,399.20

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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.