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Finding the Fourth Proportional to 28,046.64, 42,069.94 and 8,325.18

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Solution

The fourth proportional to 28,046.64, 42,069.94 and 8,325.18 is: 12,487.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,046.64 : 42,069.94 = 8,325.18 : x
  2. Step 2: Convert to fraction form
    28,046.64/42,069.94 = 8,325.18/x
  3. Step 3: Cross multiply
    28,046.64x = 42,069.94 × 8,325.18
  4. Step 4: Simplify right side
    28,046.64x = 350,239,860.81
  5. Step 5: Solve for x
    x = 350,239,860.81/28,046.64
  6. Step 6: Final answer
    x = 12,487.76

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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.