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Finding the Fourth Proportional to 23,628, 35,447.76 and 7,212

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Solution

The fourth proportional to 23,628, 35,447.76 and 7,212 is: 10,819.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,628 : 35,447.76 = 7,212 : x
  2. Step 2: Convert to fraction form
    23,628/35,447.76 = 7,212/x
  3. Step 3: Cross multiply
    23,628x = 35,447.76 × 7,212
  4. Step 4: Simplify right side
    23,628x = 255,649,245.12
  5. Step 5: Solve for x
    x = 255,649,245.12/23,628
  6. Step 6: Final answer
    x = 10,819.76

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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.