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Finding the Fourth Proportional to 28,790, 43,189.32 and 10,326.32

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Solution

The fourth proportional to 28,790, 43,189.32 and 10,326.32 is: 15,491.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,790 : 43,189.32 = 10,326.32 : x
  2. Step 2: Convert to fraction form
    28,790/43,189.32 = 10,326.32/x
  3. Step 3: Cross multiply
    28,790x = 43,189.32 × 10,326.32
  4. Step 4: Simplify right side
    28,790x = 445,986,738.90
  5. Step 5: Solve for x
    x = 445,986,738.90/28,790
  6. Step 6: Final answer
    x = 15,491.03

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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.