Home / 12,221.36-18,332.12-2,987.36

Finding the Fourth Proportional to 12,221.36, 18,332.12 and 2,987.36

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Solution

The fourth proportional to 12,221.36, 18,332.12 and 2,987.36 is: 4,481.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.36 : 18,332.12 = 2,987.36 : x
  2. Step 2: Convert to fraction form
    12,221.36/18,332.12 = 2,987.36/x
  3. Step 3: Cross multiply
    12,221.36x = 18,332.12 × 2,987.36
  4. Step 4: Simplify right side
    12,221.36x = 54,764,642.00
  5. Step 5: Solve for x
    x = 54,764,642.00/12,221.36
  6. Step 6: Final answer
    x = 4,481.06

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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.