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Finding the Fourth Proportional to 28,855.60, 43,284.48 and 8,078.56

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Solution

The fourth proportional to 28,855.60, 43,284.48 and 8,078.56 is: 12,118.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,855.60 : 43,284.48 = 8,078.56 : x
  2. Step 2: Convert to fraction form
    28,855.60/43,284.48 = 8,078.56/x
  3. Step 3: Cross multiply
    28,855.60x = 43,284.48 × 8,078.56
  4. Step 4: Simplify right side
    28,855.60x = 349,676,268.75
  5. Step 5: Solve for x
    x = 349,676,268.75/28,855.60
  6. Step 6: Final answer
    x = 12,118.14

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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.