Home / 19,784.40-29,687.60-8,096.80

Finding the Fourth Proportional to 19,784.40, 29,687.60 and 8,096.80

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Solution

The fourth proportional to 19,784.40, 29,687.60 and 8,096.80 is: 12,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,784.40 : 29,687.60 = 8,096.80 : x
  2. Step 2: Convert to fraction form
    19,784.40/29,687.60 = 8,096.80/x
  3. Step 3: Cross multiply
    19,784.40x = 29,687.60 × 8,096.80
  4. Step 4: Simplify right side
    19,784.40x = 240,374,559.68
  5. Step 5: Solve for x
    x = 240,374,559.68/19,784.40
  6. Step 6: Final answer
    x = 12,149.70

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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.