Home / 28,530.88-42,785.82-9,805.60

Finding the Fourth Proportional to 28,530.88, 42,785.82 and 9,805.60

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Solution

The fourth proportional to 28,530.88, 42,785.82 and 9,805.60 is: 14,704.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.88 : 42,785.82 = 9,805.60 : x
  2. Step 2: Convert to fraction form
    28,530.88/42,785.82 = 9,805.60/x
  3. Step 3: Cross multiply
    28,530.88x = 42,785.82 × 9,805.60
  4. Step 4: Simplify right side
    28,530.88x = 419,540,636.59
  5. Step 5: Solve for x
    x = 419,540,636.59/28,530.88
  6. Step 6: Final answer
    x = 14,704.79

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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.