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Finding the Fourth Proportional to 28,037.22, 42,048.66 and 8,311.16

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Solution

The fourth proportional to 28,037.22, 42,048.66 and 8,311.16 is: 12,464.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,037.22 : 42,048.66 = 8,311.16 : x
  2. Step 2: Convert to fraction form
    28,037.22/42,048.66 = 8,311.16/x
  3. Step 3: Cross multiply
    28,037.22x = 42,048.66 × 8,311.16
  4. Step 4: Simplify right side
    28,037.22x = 349,473,141.05
  5. Step 5: Solve for x
    x = 349,473,141.05/28,037.22
  6. Step 6: Final answer
    x = 12,464.61

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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.