Home / 12,779.37-19,147.79-4,454.80

Finding the Fourth Proportional to 12,779.37, 19,147.79 and 4,454.80

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Solution

The fourth proportional to 12,779.37, 19,147.79 and 4,454.80 is: 6,674.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.37 : 19,147.79 = 4,454.80 : x
  2. Step 2: Convert to fraction form
    12,779.37/19,147.79 = 4,454.80/x
  3. Step 3: Cross multiply
    12,779.37x = 19,147.79 × 4,454.80
  4. Step 4: Simplify right side
    12,779.37x = 85,299,538.16
  5. Step 5: Solve for x
    x = 85,299,538.16/12,779.37
  6. Step 6: Final answer
    x = 6,674.78

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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.