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Finding the Fourth Proportional to 28,039.53, 42,052.81 and 8,313.33

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Solution

The fourth proportional to 28,039.53, 42,052.81 and 8,313.33 is: 12,468.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,039.53 : 42,052.81 = 8,313.33 : x
  2. Step 2: Convert to fraction form
    28,039.53/42,052.81 = 8,313.33/x
  3. Step 3: Cross multiply
    28,039.53x = 42,052.81 × 8,313.33
  4. Step 4: Simplify right side
    28,039.53x = 349,598,886.96
  5. Step 5: Solve for x
    x = 349,598,886.96/28,039.53
  6. Step 6: Final answer
    x = 12,468.07

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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.