Home / 19,806.72-29,709.81-4,813.96

Finding the Fourth Proportional to 19,806.72, 29,709.81 and 4,813.96

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Solution

The fourth proportional to 19,806.72, 29,709.81 and 4,813.96 is: 7,220.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,806.72 : 29,709.81 = 4,813.96 : x
  2. Step 2: Convert to fraction form
    19,806.72/29,709.81 = 4,813.96/x
  3. Step 3: Cross multiply
    19,806.72x = 29,709.81 × 4,813.96
  4. Step 4: Simplify right side
    19,806.72x = 143,021,836.95
  5. Step 5: Solve for x
    x = 143,021,836.95/19,806.72
  6. Step 6: Final answer
    x = 7,220.87

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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.