Home / 28,814.86-43,201.30-19,431.57

Finding the Fourth Proportional to 28,814.86, 43,201.30 and 19,431.57

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Solution

The fourth proportional to 28,814.86, 43,201.30 and 19,431.57 is: 29,133.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,814.86 : 43,201.30 = 19,431.57 : x
  2. Step 2: Convert to fraction form
    28,814.86/43,201.30 = 19,431.57/x
  3. Step 3: Cross multiply
    28,814.86x = 43,201.30 × 19,431.57
  4. Step 4: Simplify right side
    28,814.86x = 839,469,113.40
  5. Step 5: Solve for x
    x = 839,469,113.40/28,814.86
  6. Step 6: Final answer
    x = 29,133.20

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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.