Home / 28,716.52-43,074.78-12,289

Finding the Fourth Proportional to 28,716.52, 43,074.78 and 12,289

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Solution

The fourth proportional to 28,716.52, 43,074.78 and 12,289 is: 18,433.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,716.52 : 43,074.78 = 12,289 : x
  2. Step 2: Convert to fraction form
    28,716.52/43,074.78 = 12,289/x
  3. Step 3: Cross multiply
    28,716.52x = 43,074.78 × 12,289
  4. Step 4: Simplify right side
    28,716.52x = 529,345,971.42
  5. Step 5: Solve for x
    x = 529,345,971.42/28,716.52
  6. Step 6: Final answer
    x = 18,433.50

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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.