Home / 19,789.24-29,683.78-8,102.47

Finding the Fourth Proportional to 19,789.24, 29,683.78 and 8,102.47

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Solution

The fourth proportional to 19,789.24, 29,683.78 and 8,102.47 is: 12,153.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,789.24 : 29,683.78 = 8,102.47 : x
  2. Step 2: Convert to fraction form
    19,789.24/29,683.78 = 8,102.47/x
  3. Step 3: Cross multiply
    19,789.24x = 29,683.78 × 8,102.47
  4. Step 4: Simplify right side
    19,789.24x = 240,511,936.94
  5. Step 5: Solve for x
    x = 240,511,936.94/19,789.24
  6. Step 6: Final answer
    x = 12,153.67

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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.