Home / 14,274.20-21,411.30-11,811.80

Finding the Fourth Proportional to 14,274.20, 21,411.30 and 11,811.80

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Solution

The fourth proportional to 14,274.20, 21,411.30 and 11,811.80 is: 17,717.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,274.20 : 21,411.30 = 11,811.80 : x
  2. Step 2: Convert to fraction form
    14,274.20/21,411.30 = 11,811.80/x
  3. Step 3: Cross multiply
    14,274.20x = 21,411.30 × 11,811.80
  4. Step 4: Simplify right side
    14,274.20x = 252,905,993.34
  5. Step 5: Solve for x
    x = 252,905,993.34/14,274.20
  6. Step 6: Final answer
    x = 17,717.70

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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.