Home / 28,872.86-43,313.70-7,813.58

Finding the Fourth Proportional to 28,872.86, 43,313.70 and 7,813.58

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Solution

The fourth proportional to 28,872.86, 43,313.70 and 7,813.58 is: 11,721.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,872.86 : 43,313.70 = 7,813.58 : x
  2. Step 2: Convert to fraction form
    28,872.86/43,313.70 = 7,813.58/x
  3. Step 3: Cross multiply
    28,872.86x = 43,313.70 × 7,813.58
  4. Step 4: Simplify right side
    28,872.86x = 338,435,060.05
  5. Step 5: Solve for x
    x = 338,435,060.05/28,872.86
  6. Step 6: Final answer
    x = 11,721.56

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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.