Home / 21,614.40-29,829.60-12,183.84

Finding the Fourth Proportional to 21,614.40, 29,829.60 and 12,183.84

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Solution

The fourth proportional to 21,614.40, 29,829.60 and 12,183.84 is: 16,814.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,614.40 : 29,829.60 = 12,183.84 : x
  2. Step 2: Convert to fraction form
    21,614.40/29,829.60 = 12,183.84/x
  3. Step 3: Cross multiply
    21,614.40x = 29,829.60 × 12,183.84
  4. Step 4: Simplify right side
    21,614.40x = 363,439,073.66
  5. Step 5: Solve for x
    x = 363,439,073.66/21,614.40
  6. Step 6: Final answer
    x = 16,814.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.