Home / 20,645.64-30,968.46-8,325

Finding the Fourth Proportional to 20,645.64, 30,968.46 and 8,325

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Solution

The fourth proportional to 20,645.64, 30,968.46 and 8,325 is: 12,487.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.64 : 30,968.46 = 8,325 : x
  2. Step 2: Convert to fraction form
    20,645.64/30,968.46 = 8,325/x
  3. Step 3: Cross multiply
    20,645.64x = 30,968.46 × 8,325
  4. Step 4: Simplify right side
    20,645.64x = 257,812,429.50
  5. Step 5: Solve for x
    x = 257,812,429.50/20,645.64
  6. Step 6: Final answer
    x = 12,487.50

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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.