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Finding the Fourth Proportional to 11,994.88, 18,000.48 and 4,203.76

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Solution

The fourth proportional to 11,994.88, 18,000.48 and 4,203.76 is: 6,308.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,994.88 : 18,000.48 = 4,203.76 : x
  2. Step 2: Convert to fraction form
    11,994.88/18,000.48 = 4,203.76/x
  3. Step 3: Cross multiply
    11,994.88x = 18,000.48 × 4,203.76
  4. Step 4: Simplify right side
    11,994.88x = 75,669,697.80
  5. Step 5: Solve for x
    x = 75,669,697.80/11,994.88
  6. Step 6: Final answer
    x = 6,308.50

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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.