Home / 11,999.88-18,007.92-4,208.76

Finding the Fourth Proportional to 11,999.88, 18,007.92 and 4,208.76

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Solution

The fourth proportional to 11,999.88, 18,007.92 and 4,208.76 is: 6,315.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,999.88 : 18,007.92 = 4,208.76 : x
  2. Step 2: Convert to fraction form
    11,999.88/18,007.92 = 4,208.76/x
  3. Step 3: Cross multiply
    11,999.88x = 18,007.92 × 4,208.76
  4. Step 4: Simplify right side
    11,999.88x = 75,791,013.38
  5. Step 5: Solve for x
    x = 75,791,013.38/11,999.88
  6. Step 6: Final answer
    x = 6,315.98

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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.