Home / 13,672.26-20,518.38-12,855.78

Finding the Fourth Proportional to 13,672.26, 20,518.38 and 12,855.78

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Solution

The fourth proportional to 13,672.26, 20,518.38 and 12,855.78 is: 19,293.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.26 : 20,518.38 = 12,855.78 : x
  2. Step 2: Convert to fraction form
    13,672.26/20,518.38 = 12,855.78/x
  3. Step 3: Cross multiply
    13,672.26x = 20,518.38 × 12,855.78
  4. Step 4: Simplify right side
    13,672.26x = 263,779,779.24
  5. Step 5: Solve for x
    x = 263,779,779.24/13,672.26
  6. Step 6: Final answer
    x = 19,293.06

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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.