Home / 12,308.25-18,464.36-3,987.63

Finding the Fourth Proportional to 12,308.25, 18,464.36 and 3,987.63

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Solution

The fourth proportional to 12,308.25, 18,464.36 and 3,987.63 is: 5,982.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,308.25 : 18,464.36 = 3,987.63 : x
  2. Step 2: Convert to fraction form
    12,308.25/18,464.36 = 3,987.63/x
  3. Step 3: Cross multiply
    12,308.25x = 18,464.36 × 3,987.63
  4. Step 4: Simplify right side
    12,308.25x = 73,629,015.93
  5. Step 5: Solve for x
    x = 73,629,015.93/12,308.25
  6. Step 6: Final answer
    x = 5,982.08

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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.