Home / 19,779.14-29,676.22-12,772.54

Finding the Fourth Proportional to 19,779.14, 29,676.22 and 12,772.54

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Solution

The fourth proportional to 19,779.14, 29,676.22 and 12,772.54 is: 19,163.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.14 : 29,676.22 = 12,772.54 : x
  2. Step 2: Convert to fraction form
    19,779.14/29,676.22 = 12,772.54/x
  3. Step 3: Cross multiply
    19,779.14x = 29,676.22 × 12,772.54
  4. Step 4: Simplify right side
    19,779.14x = 379,040,617.08
  5. Step 5: Solve for x
    x = 379,040,617.08/19,779.14
  6. Step 6: Final answer
    x = 19,163.66

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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.