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Finding the Fourth Proportional to 28,596.32, 42,896.49 and 8,872.28

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Solution

The fourth proportional to 28,596.32, 42,896.49 and 8,872.28 is: 13,309.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,596.32 : 42,896.49 = 8,872.28 : x
  2. Step 2: Convert to fraction form
    28,596.32/42,896.49 = 8,872.28/x
  3. Step 3: Cross multiply
    28,596.32x = 42,896.49 × 8,872.28
  4. Step 4: Simplify right side
    28,596.32x = 380,589,670.30
  5. Step 5: Solve for x
    x = 380,589,670.30/28,596.32
  6. Step 6: Final answer
    x = 13,309.04

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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.