Home / 12,739.25-19,109.54-3,854.35

Finding the Fourth Proportional to 12,739.25, 19,109.54 and 3,854.35

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Solution

The fourth proportional to 12,739.25, 19,109.54 and 3,854.35 is: 5,781.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.25 : 19,109.54 = 3,854.35 : x
  2. Step 2: Convert to fraction form
    12,739.25/19,109.54 = 3,854.35/x
  3. Step 3: Cross multiply
    12,739.25x = 19,109.54 × 3,854.35
  4. Step 4: Simplify right side
    12,739.25x = 73,654,836.23
  5. Step 5: Solve for x
    x = 73,654,836.23/12,739.25
  6. Step 6: Final answer
    x = 5,781.73

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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.