Home / 28,781.24-43,173.60-12,124.64

Finding the Fourth Proportional to 28,781.24, 43,173.60 and 12,124.64

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Solution

The fourth proportional to 28,781.24, 43,173.60 and 12,124.64 is: 18,187.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.24 : 43,173.60 = 12,124.64 : x
  2. Step 2: Convert to fraction form
    28,781.24/43,173.60 = 12,124.64/x
  3. Step 3: Cross multiply
    28,781.24x = 43,173.60 × 12,124.64
  4. Step 4: Simplify right side
    28,781.24x = 523,464,357.50
  5. Step 5: Solve for x
    x = 523,464,357.50/28,781.24
  6. Step 6: Final answer
    x = 18,187.69

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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.