Home / 28,356.35-42,540.85-8,636.42

Finding the Fourth Proportional to 28,356.35, 42,540.85 and 8,636.42

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Solution

The fourth proportional to 28,356.35, 42,540.85 and 8,636.42 is: 12,956.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.35 : 42,540.85 = 8,636.42 : x
  2. Step 2: Convert to fraction form
    28,356.35/42,540.85 = 8,636.42/x
  3. Step 3: Cross multiply
    28,356.35x = 42,540.85 × 8,636.42
  4. Step 4: Simplify right side
    28,356.35x = 367,400,716.32
  5. Step 5: Solve for x
    x = 367,400,716.32/28,356.35
  6. Step 6: Final answer
    x = 12,956.56

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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.