Home / 12,779.87-19,171.74-4,013.96

Finding the Fourth Proportional to 12,779.87, 19,171.74 and 4,013.96

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Solution

The fourth proportional to 12,779.87, 19,171.74 and 4,013.96 is: 6,021.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.87 : 19,171.74 = 4,013.96 : x
  2. Step 2: Convert to fraction form
    12,779.87/19,171.74 = 4,013.96/x
  3. Step 3: Cross multiply
    12,779.87x = 19,171.74 × 4,013.96
  4. Step 4: Simplify right side
    12,779.87x = 76,954,597.49
  5. Step 5: Solve for x
    x = 76,954,597.49/12,779.87
  6. Step 6: Final answer
    x = 6,021.55

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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.