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Finding the Fourth Proportional to 28,265.55, 42,399 and 8,544.03

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Solution

The fourth proportional to 28,265.55, 42,399 and 8,544.03 is: 12,816.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,265.55 : 42,399 = 8,544.03 : x
  2. Step 2: Convert to fraction form
    28,265.55/42,399 = 8,544.03/x
  3. Step 3: Cross multiply
    28,265.55x = 42,399 × 8,544.03
  4. Step 4: Simplify right side
    28,265.55x = 362,258,327.97
  5. Step 5: Solve for x
    x = 362,258,327.97/28,265.55
  6. Step 6: Final answer
    x = 12,816.25

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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.