Home / 12,779.53-19,149.37-8,089.63

Finding the Fourth Proportional to 12,779.53, 19,149.37 and 8,089.63

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Solution

The fourth proportional to 12,779.53, 19,149.37 and 8,089.63 is: 12,121.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.53 : 19,149.37 = 8,089.63 : x
  2. Step 2: Convert to fraction form
    12,779.53/19,149.37 = 8,089.63/x
  3. Step 3: Cross multiply
    12,779.53x = 19,149.37 × 8,089.63
  4. Step 4: Simplify right side
    12,779.53x = 154,911,277.58
  5. Step 5: Solve for x
    x = 154,911,277.58/12,779.53
  6. Step 6: Final answer
    x = 12,121.83

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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.