Home / 13,779.82-19,025.08-8,682.69

Finding the Fourth Proportional to 13,779.82, 19,025.08 and 8,682.69

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Solution

The fourth proportional to 13,779.82, 19,025.08 and 8,682.69 is: 11,987.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.82 : 19,025.08 = 8,682.69 : x
  2. Step 2: Convert to fraction form
    13,779.82/19,025.08 = 8,682.69/x
  3. Step 3: Cross multiply
    13,779.82x = 19,025.08 × 8,682.69
  4. Step 4: Simplify right side
    13,779.82x = 165,188,921.50
  5. Step 5: Solve for x
    x = 165,188,921.50/13,779.82
  6. Step 6: Final answer
    x = 11,987.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.