Home / 12,208.40-18,315.87-5,188.73

Finding the Fourth Proportional to 12,208.40, 18,315.87 and 5,188.73

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Solution

The fourth proportional to 12,208.40, 18,315.87 and 5,188.73 is: 7,784.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,208.40 : 18,315.87 = 5,188.73 : x
  2. Step 2: Convert to fraction form
    12,208.40/18,315.87 = 5,188.73/x
  3. Step 3: Cross multiply
    12,208.40x = 18,315.87 × 5,188.73
  4. Step 4: Simplify right side
    12,208.40x = 95,036,104.15
  5. Step 5: Solve for x
    x = 95,036,104.15/12,208.40
  6. Step 6: Final answer
    x = 7,784.48

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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.