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Finding the Fourth Proportional to 28,313.31, 42,469.77 and 7,253.31

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Solution

The fourth proportional to 28,313.31, 42,469.77 and 7,253.31 is: 10,879.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,313.31 : 42,469.77 = 7,253.31 : x
  2. Step 2: Convert to fraction form
    28,313.31/42,469.77 = 7,253.31/x
  3. Step 3: Cross multiply
    28,313.31x = 42,469.77 × 7,253.31
  4. Step 4: Simplify right side
    28,313.31x = 308,046,407.44
  5. Step 5: Solve for x
    x = 308,046,407.44/28,313.31
  6. Step 6: Final answer
    x = 10,879.92

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1.5x scale

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.