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Finding the Fourth Proportional to 28,652.85, 42,986.73 and 10,883.85

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Solution

The fourth proportional to 28,652.85, 42,986.73 and 10,883.85 is: 16,328.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,652.85 : 42,986.73 = 10,883.85 : x
  2. Step 2: Convert to fraction form
    28,652.85/42,986.73 = 10,883.85/x
  3. Step 3: Cross multiply
    28,652.85x = 42,986.73 × 10,883.85
  4. Step 4: Simplify right side
    28,652.85x = 467,861,121.31
  5. Step 5: Solve for x
    x = 467,861,121.31/28,652.85
  6. Step 6: Final answer
    x = 16,328.61

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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.