Home / 28,920.36-43,382.30-14,141.80

Finding the Fourth Proportional to 28,920.36, 43,382.30 and 14,141.80

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Solution

The fourth proportional to 28,920.36, 43,382.30 and 14,141.80 is: 21,213.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.36 : 43,382.30 = 14,141.80 : x
  2. Step 2: Convert to fraction form
    28,920.36/43,382.30 = 14,141.80/x
  3. Step 3: Cross multiply
    28,920.36x = 43,382.30 × 14,141.80
  4. Step 4: Simplify right side
    28,920.36x = 613,503,810.14
  5. Step 5: Solve for x
    x = 613,503,810.14/28,920.36
  6. Step 6: Final answer
    x = 21,213.56

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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.