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Finding the Fourth Proportional to 12,528.22, 18,768.11 and 6,964.70

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Solution

The fourth proportional to 12,528.22, 18,768.11 and 6,964.70 is: 10,433.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.22 : 18,768.11 = 6,964.70 : x
  2. Step 2: Convert to fraction form
    12,528.22/18,768.11 = 6,964.70/x
  3. Step 3: Cross multiply
    12,528.22x = 18,768.11 × 6,964.70
  4. Step 4: Simplify right side
    12,528.22x = 130,714,232.62
  5. Step 5: Solve for x
    x = 130,714,232.62/12,528.22
  6. Step 6: Final answer
    x = 10,433.58

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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.