Home / 12,546.25-18,815.86-3,779.89

Finding the Fourth Proportional to 12,546.25, 18,815.86 and 3,779.89

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Solution

The fourth proportional to 12,546.25, 18,815.86 and 3,779.89 is: 5,668.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,546.25 : 18,815.86 = 3,779.89 : x
  2. Step 2: Convert to fraction form
    12,546.25/18,815.86 = 3,779.89/x
  3. Step 3: Cross multiply
    12,546.25x = 18,815.86 × 3,779.89
  4. Step 4: Simplify right side
    12,546.25x = 71,121,881.06
  5. Step 5: Solve for x
    x = 71,121,881.06/12,546.25
  6. Step 6: Final answer
    x = 5,668.78

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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.