Home / 28,780.75-43,190.70-10,312.75

Finding the Fourth Proportional to 28,780.75, 43,190.70 and 10,312.75

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Solution

The fourth proportional to 28,780.75, 43,190.70 and 10,312.75 is: 15,476.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.75 : 43,190.70 = 10,312.75 : x
  2. Step 2: Convert to fraction form
    28,780.75/43,190.70 = 10,312.75/x
  3. Step 3: Cross multiply
    28,780.75x = 43,190.70 × 10,312.75
  4. Step 4: Simplify right side
    28,780.75x = 445,414,891.43
  5. Step 5: Solve for x
    x = 445,414,891.43/28,780.75
  6. Step 6: Final answer
    x = 15,476.14

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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.