Home / 19,982.40-29,962.80-8,296.80

Finding the Fourth Proportional to 19,982.40, 29,962.80 and 8,296.80

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Solution

The fourth proportional to 19,982.40, 29,962.80 and 8,296.80 is: 12,440.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.40 : 29,962.80 = 8,296.80 : x
  2. Step 2: Convert to fraction form
    19,982.40/29,962.80 = 8,296.80/x
  3. Step 3: Cross multiply
    19,982.40x = 29,962.80 × 8,296.80
  4. Step 4: Simplify right side
    19,982.40x = 248,595,359.04
  5. Step 5: Solve for x
    x = 248,595,359.04/19,982.40
  6. Step 6: Final answer
    x = 12,440.72

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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.