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Finding the Fourth Proportional to 28,347.28, 42,512.28 and 7,568.08

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Solution

The fourth proportional to 28,347.28, 42,512.28 and 7,568.08 is: 11,349.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,347.28 : 42,512.28 = 7,568.08 : x
  2. Step 2: Convert to fraction form
    28,347.28/42,512.28 = 7,568.08/x
  3. Step 3: Cross multiply
    28,347.28x = 42,512.28 × 7,568.08
  4. Step 4: Simplify right side
    28,347.28x = 321,736,336.02
  5. Step 5: Solve for x
    x = 321,736,336.02/28,347.28
  6. Step 6: Final answer
    x = 11,349.81

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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.