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Finding the Fourth Proportional to 12,564.45, 18,847.12 and 6,321.06

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Solution

The fourth proportional to 12,564.45, 18,847.12 and 6,321.06 is: 9,481.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,564.45 : 18,847.12 = 6,321.06 : x
  2. Step 2: Convert to fraction form
    12,564.45/18,847.12 = 6,321.06/x
  3. Step 3: Cross multiply
    12,564.45x = 18,847.12 × 6,321.06
  4. Step 4: Simplify right side
    12,564.45x = 119,133,856.52
  5. Step 5: Solve for x
    x = 119,133,856.52/12,564.45
  6. Step 6: Final answer
    x = 9,481.82

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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.